Transactions of Nonferrous Metals Society of China最新文献

英文中文

Alloying process of Mg-La in NaCl-KCl-MgCl2-LaCl3 melts Mg-La在NaCl-KCl-MgCl2-LaCl3熔体中的合金化过程

IF 4.7 1区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Transactions of Nonferrous Metals Society of China

Pub Date : 2025-11-01 DOI: 10.1016/S1003-6326(25)66921-4

Jia ZHAO , Zhi-tao SONG , Gui-min LU

The alloying process of Mg-La in NaCl-KCl-MgCl₂-LaCl₃ (NKML) melts during electroreduction was elucidated using electrochemical techniques and deep potential molecular dynamics (DPMD) simulations. In the NKML system, the Mg²⁺/La³⁺ electrodeposition on the tungsten (W) electrode at 973 K was found to be a one-step process. The nucleation of metal ions on the electrode surface followed an instantaneous nucleation mode and was not influenced by the alloying process. The redox potential and underpotential deposition behavior of the metal ions in the NKML system were accurately predicted by the DPMD simulations, confirming the alloying process of the Mg-La. Additionally, scanning electron microscopy with energy dispersive spectroscopy (SEM-EDS) analysis results confirmed that the cathodic deposits consisted of a bright phase and a dark phase, corresponding to the Mg-La alloys and Mg, respectively. The distribution of electrolytic products suggests that the cathodic deposit initially favors the Mg phase, with the Mg-La alloy forming more easily when the Mg source in the melt is depleted.

利用电化学技术和深势分子动力学（DPMD）模拟研究了电还原过程中Mg-La在NaCl-KCl-MgCl2-LaCl3 （NKML）熔体中的合金化过程。在NKML体系中，在973 K下，Mg2+/La3+在钨(W)电极上的电沉积过程是一步完成的。金属离子在电极表面的成核遵循瞬时成核模式，不受合金化工艺的影响。DPMD模拟准确预测了金属离子在NKML体系中的氧化还原电位和欠电位沉积行为，证实了Mg-La的合金化过程。此外，扫描电镜和能谱分析（SEM-EDS）结果证实，阴极沉积由亮相和暗相组成，分别对应于Mg- la合金和Mg。电解产物的分布表明，阴极沉积初期有利于Mg相的形成，当熔体中的Mg源耗尽时，Mg- la合金更容易形成。

{"title":"Alloying process of Mg-La in NaCl-KCl-MgCl2-LaCl3 melts","authors":"Jia ZHAO , Zhi-tao SONG , Gui-min LU","doi":"10.1016/S1003-6326(25)66921-4","DOIUrl":"10.1016/S1003-6326(25)66921-4","url":null,"abstract":"<div><div>The alloying process of Mg-La in NaCl-KCl-MgCl<sub>2</sub>-LaCl<sub>3</sub> (NKML) melts during electroreduction was elucidated using electrochemical techniques and deep potential molecular dynamics (DPMD) simulations. In the NKML system, the Mg<sup>2+</sup>/La<sup>3+</sup> electrodeposition on the tungsten (W) electrode at 973 K was found to be a one-step process. The nucleation of metal ions on the electrode surface followed an instantaneous nucleation mode and was not influenced by the alloying process. The redox potential and underpotential deposition behavior of the metal ions in the NKML system were accurately predicted by the DPMD simulations, confirming the alloying process of the Mg-La. Additionally, scanning electron microscopy with energy dispersive spectroscopy (SEM-EDS) analysis results confirmed that the cathodic deposits consisted of a bright phase and a dark phase, corresponding to the Mg-La alloys and Mg, respectively. The distribution of electrolytic products suggests that the cathodic deposit initially favors the Mg phase, with the Mg-La alloy forming more easily when the Mg source in the melt is depleted.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 11","pages":"Pages 3919-3932"},"PeriodicalIF":4.7,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145771973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Loss behavior of Ni and Co during Al and Sc enrichment from HNO3 leach liquor of saprolitic laterite ore 腐土型红土矿HNO3浸出液富集Al、Sc过程中Ni、Co的损失行为

IF 4.7 1区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Transactions of Nonferrous Metals Society of China

Pub Date : 2025-11-01 DOI: 10.1016/S1003-6326(25)66922-6

Jian-cheng YU , Bao-zhong MA , Long-fei SHI , Zhi-he CAO , Yu-bo LIU , Cheng-yan WANG

The loss pathways of Ni and Co during Al and Sc enrichment were analyzed in the HNO₃ leach liquor of saprolitic laterite ore. Although over 99% of Al and Sc can be enriched, about 40% of Ni and Co are also lost. The adsorption of Al-Sc precipitate is an important cause of Ni and Co loss. Subsequently, the precipitation behavior of metal ions in the different nitrate solutions was studied. The results confirm that Ni²⁺ and Co²⁺ do not hydrolyze to form their respective hydroxides. Ni²⁺, Co²⁺ and Mg²⁺ can form composite hydroxides with precipitated Al(OH)₃, decreasing the pH at which Ni²⁺ and Co²⁺ begin to precipitate, causing their co-precipitation loss. A high Mg²⁺ concentration enhances the formation of these composite hydroxides. Finally, titration curves for different nitrate systems were determined, further demonstrating the formation of Me-Al composite hydroxides and revealing a formation trend of Mg-Al > Co-Al > Ni-Al.

分析了腐土型红土矿HNO3浸出液富集Al和Sc过程中Ni和Co的损失途径，发现虽然富集了99%以上的Al和Sc，但也损失了约40%的Ni和Co。Al-Sc沉淀的吸附是导致Ni和Co损失的重要原因。随后，研究了金属离子在不同硝酸溶液中的析出行为。结果证实Ni2+和Co2+不能水解形成各自的氢氧化物。Ni2+、Co2+和Mg2+可以与析出的Al(OH)3形成复合氢氧化物，降低Ni2+和Co2+开始析出的pH，造成共析出损失。高浓度的Mg2+促进了这些复合氢氧化物的形成。最后，测定了不同硝酸盐体系的滴定曲线，进一步证明了Me-Al复合氢氧化物的形成，并揭示了Mg-Al >； Co-Al >； Ni-Al的形成趋势。

{"title":"Loss behavior of Ni and Co during Al and Sc enrichment from HNO3 leach liquor of saprolitic laterite ore","authors":"Jian-cheng YU , Bao-zhong MA , Long-fei SHI , Zhi-he CAO , Yu-bo LIU , Cheng-yan WANG","doi":"10.1016/S1003-6326(25)66922-6","DOIUrl":"10.1016/S1003-6326(25)66922-6","url":null,"abstract":"<div><div>The loss pathways of Ni and Co during Al and Sc enrichment were analyzed in the HNO<sub>3</sub> leach liquor of saprolitic laterite ore. Although over 99% of Al and Sc can be enriched, about 40% of Ni and Co are also lost. The adsorption of Al-Sc precipitate is an important cause of Ni and Co loss. Subsequently, the precipitation behavior of metal ions in the different nitrate solutions was studied. The results confirm that Ni<sup>2+</sup> and Co<sup>2+</sup> do not hydrolyze to form their respective hydroxides. Ni<sup>2+</sup>, Co<sup>2+</sup> and Mg<sup>2+</sup> can form composite hydroxides with precipitated Al(OH)<sub>3</sub>, decreasing the pH at which Ni<sup>2+</sup> and Co<sup>2+</sup> begin to precipitate, causing their co-precipitation loss. A high Mg<sup>2+</sup> concentration enhances the formation of these composite hydroxides. Finally, titration curves for different nitrate systems were determined, further demonstrating the formation of Me-Al composite hydroxides and revealing a formation trend of Mg-Al > Co-Al > Ni-Al.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 11","pages":"Pages 3933-3948"},"PeriodicalIF":4.7,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145771974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research progress on magnetoplastic effects of light alloys assisted by magnetic field 磁场辅助下轻合金磁塑性效应的研究进展

IF 4.7 1区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Transactions of Nonferrous Metals Society of China

Pub Date : 2025-11-01 DOI: 10.1016/S1003-6326(25)66898-1

Bo CHE, Liang HUANG, Bing-xin XIE, Wei ZHOU

Light alloys have irreplaceable advantages such as high specific strength and low density. They are indispensable structural materials in aerospace, military, and marine engineering. It is an enduring research hotspot to prepare high-strength and high-toughness light alloys to play a more significant role in advanced engineering applications. As a new method to improve the mechanical properties of light alloys, the magnetic field-assisted process can produce magnetoplastic effects. Therefore, in this paper, research progress on the magnetoplastic effects of light alloys assisted by magnetic fields was reviewed, and the effects of magnetic fields on dislocations, grain refinement, precipitation kinetics, phase transformation, and mechanical properties of light alloys were elucidated. Magnetic field treatment transforms radical pairs from the ground state to the excited state, which reduces the resistance between dislocations and obstacles, facilitating dislocation depinning. Moreover, magnetic field can promote grain refinement and phase transformation, increase precipitation kinetics, and synergistically improve strength and elongation. Finally, the prospects of magnetic field-assisted processes of light alloys were discussed.

轻合金具有高比强度、低密度等不可替代的优点。它们是航空航天、军事和海洋工程中不可缺少的结构材料。制备高强度、高韧性轻合金，使其在先进的工程应用中发挥更大的作用，是一个经久不衰的研究热点。磁场辅助工艺可以产生磁塑性效应，是一种改善轻合金力学性能的新方法。因此，本文综述了磁场辅助下轻合金磁塑性效应的研究进展，阐述了磁场对轻合金的位错、晶粒细化、析出动力学、相变和力学性能的影响。磁场处理使自由基对从基态转变为激发态，从而减小位错与障碍物之间的阻力，促进位错脱屑。此外，磁场能促进晶粒细化和相变，提高析出动力学，协同提高强度和伸长率。最后，对轻合金磁场辅助工艺的发展前景进行了展望。

{"title":"Research progress on magnetoplastic effects of light alloys assisted by magnetic field","authors":"Bo CHE, Liang HUANG, Bing-xin XIE, Wei ZHOU","doi":"10.1016/S1003-6326(25)66898-1","DOIUrl":"10.1016/S1003-6326(25)66898-1","url":null,"abstract":"<div><div>Light alloys have irreplaceable advantages such as high specific strength and low density. They are indispensable structural materials in aerospace, military, and marine engineering. It is an enduring research hotspot to prepare high-strength and high-toughness light alloys to play a more significant role in advanced engineering applications. As a new method to improve the mechanical properties of light alloys, the magnetic field-assisted process can produce magnetoplastic effects. Therefore, in this paper, research progress on the magnetoplastic effects of light alloys assisted by magnetic fields was reviewed, and the effects of magnetic fields on dislocations, grain refinement, precipitation kinetics, phase transformation, and mechanical properties of light alloys were elucidated. Magnetic field treatment transforms radical pairs from the ground state to the excited state, which reduces the resistance between dislocations and obstacles, facilitating dislocation depinning. Moreover, magnetic field can promote grain refinement and phase transformation, increase precipitation kinetics, and synergistically improve strength and elongation. Finally, the prospects of magnetic field-assisted processes of light alloys were discussed.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 11","pages":"Pages 3533-3560"},"PeriodicalIF":4.7,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145771977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing Mg-air battery discharge performance with AZ31 anodes using complexing agents as electrolyte additives 用络合剂作为电解质添加剂提高AZ31阳极镁空气电池的放电性能

IF 4.7 1区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Transactions of Nonferrous Metals Society of China

Pub Date : 2025-11-01 DOI: 10.1016/S1003-6326(25)66907-X

Xue-ning LI, Chen-chen ZHAO, Shu-bo LI, Mei WAN, Xian DU, Ke LIU, Wen-bo DU

The addition of complexing agents to the electrolyte has been shown to be an effective method to enhance the discharge performance of magnesium-air batteries. In this work, four complexing agents: citric acid (CIT), salicylic acid (SAL), 2,6-dihydroxybenzoic acid (2,6-DHB), and 5-sulfoisophthalic acid (5-sulfoSAL) were selected as potential candidates. Through electrochemical tests, full-cell discharge experiments, and physicochemical characterization, the impact of these complexing agents on the discharge performance of magnesium-air batteries using AZ31 alloy as the anode material was investigated. The results demonstrated that the four complexing agents increased the discharge voltage of the batteries. Notably, SAL could significantly improve the anodic efficiency and the discharge specific capacity, achieving an anodic efficiency of 60.3% and a specific capacity of 1358.3 mA·h/g at a discharge current density of 10 mA/cm².

在电解液中加入络合剂是提高镁空气电池放电性能的有效方法。在这项工作中，四种络合剂：柠檬酸（CIT），水杨酸（SAL）， 2,6-二羟基苯甲酸（2,6- dhb）和5-磺基二苯二甲酸（5-磺基苯二甲酸）作为潜在的候选物。通过电化学测试、满槽放电实验和理化表征，研究了这些络合剂对以AZ31合金为负极材料的镁空气电池放电性能的影响。结果表明，4种络合剂均能提高电池的放电电压。值得注意的是，SAL可以显著提高阳极效率和放电比容量，在放电电流密度为10 mA/cm2时，阳极效率达到60.3%，比容量达到1358.3 mA·h/g。

引用次数: 0

Development of Co-Ni-Ti-V superalloys with exceptional high-temperature strength based on phase diagram 基于相图的Co-Ni-Ti-V高温合金高温强度研究

IF 4.7 1区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Transactions of Nonferrous Metals Society of China

Pub Date : 2025-11-01 DOI: 10.1016/S1003-6326(25)66913-5

Jian-ping LE , Jin-bin ZHANG , Yu-peng ZHANG , Yi-hui GUO , Yong LU , Cui-ping WANG , Xing-jun LIU

The Co-Ni-Ti-V quaternary phase diagrams within the Co-Ni-rich region were investigated using the electron probe X-ray micro-analyzer (EPMA) and X-ray diffraction (XRD). Three isothermal sections corresponding to the Co-10Ni-Ti-V, Co-15Ni-Ti-V, and Co-20Ni-Ti-V quaternary systems at 1000 °C were experimentally established. The results indicate that increasing Ni content markedly broadens the γ (α-Co) and γ′ (Co₃Ti) two-phase regions. Based on the Co-Ni-Ti-V phase diagram, alloys with high γ′ solvus temperature were designed, and their comprehensive properties, including γ′ coarsening behavior and mechanical properties, were thoroughly investigated. Compared to Co-Ti-based superalloys, the Co-20Ni-10Ti-10V alloy exhibits lower coarsening rates of γ′ precipitates and γ/γ′ lattice mismatch. Notably, it possesses exceptional high-temperature mechanical properties, with a yield strength of 508 MPa at 1000 °C. This superior performance is primarily attributed to the presence of a high density of stacking fault shear.

利用电子探针x射线显微分析仪（EPMA）和x射线衍射仪（XRD）研究了Co-Ni-Ti-V富镍区Co-Ni-Ti-V四元相图。实验建立了Co-10Ni-Ti-V、Co-15Ni-Ti-V和Co-20Ni-Ti-V四元体系在1000℃下的等温切片。结果表明，随着Ni含量的增加，γ (α-Co)和γ′（Co3Ti）两相区明显变宽。基于Co-Ni-Ti-V相图，设计了具有高γ′溶剂温度的合金，并对其γ′粗化行为和力学性能等综合性能进行了研究。与co - ti基高温合金相比，Co-20Ni-10Ti-10V合金表现出较低的γ′析出物粗化率和γ/γ′晶格失配。值得注意的是，它具有优异的高温机械性能，在1000℃时的屈服强度为508 MPa。这种优越的性能主要归因于高密度的堆积断层剪切的存在。

{"title":"Development of Co-Ni-Ti-V superalloys with exceptional high-temperature strength based on phase diagram","authors":"Jian-ping LE , Jin-bin ZHANG , Yu-peng ZHANG , Yi-hui GUO , Yong LU , Cui-ping WANG , Xing-jun LIU","doi":"10.1016/S1003-6326(25)66913-5","DOIUrl":"10.1016/S1003-6326(25)66913-5","url":null,"abstract":"<div><div>The Co-Ni-Ti-V quaternary phase diagrams within the Co-Ni-rich region were investigated using the electron probe X-ray micro-analyzer (EPMA) and X-ray diffraction (XRD). Three isothermal sections corresponding to the Co-10Ni-Ti-V, Co-15Ni-Ti-V, and Co-20Ni-Ti-V quaternary systems at 1000 °C were experimentally established. The results indicate that increasing Ni content markedly broadens the γ (α-Co) and γ′ (Co<sub>3</sub>Ti) two-phase regions. Based on the Co-Ni-Ti-V phase diagram, alloys with high γ′ solvus temperature were designed, and their comprehensive properties, including γ′ coarsening behavior and mechanical properties, were thoroughly investigated. Compared to Co-Ti-based superalloys, the Co-20Ni-10Ti-10V alloy exhibits lower coarsening rates of γ′ precipitates and γ/γ′ lattice mismatch. Notably, it possesses exceptional high-temperature mechanical properties, with a yield strength of 508 MPa at 1000 °C. This superior performance is primarily attributed to the presence of a high density of stacking fault shear.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 11","pages":"Pages 3795-3812"},"PeriodicalIF":4.7,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145771953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancement of rust leaching by frame blades and its mechanisms 框架叶片增强锈蚀作用及其机理

IF 4.7 1区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Transactions of Nonferrous Metals Society of China

Pub Date : 2025-11-01 DOI: 10.1016/S1003-6326(25)66923-8

Lei ZHOU, Qiu-yue ZHAO, Guo-zhi LV, Zhi-he DOU, Ting-an ZHANG

Frame blades were used to replace traditional propeller blades to enhance the leaching step efficiency of Becher process. A combined approach of leaching, electrochemical experiments, and numerical simulations was employed. Results demonstrate a significant improvement in leaching efficiency using frame blades compared to propellers, reducing reaction time from 15 to 10 h. Even at a stirring speed of 300 r/min, frame blades perform better than propellers at 500 r/min. Kinetics analysis indicates that the leaching process is controlled by surface chemical reactions. CFD-PBM simulations reveal that frame blades at 300 r/min generate larger bubbles and higher turbulent kinetic energy than propeller blades at 500 r/min. Frame blades enhance leaching efficiency by refining bubble size to improve oxygen mass transfer and by increasing turbulent kinetic energy for better mixing.

采用框架叶片代替传统的螺旋桨叶片，提高了贝歇法浸出步骤效率。采用浸出、电化学实验和数值模拟相结合的方法。结果表明，与螺旋桨相比，使用框架叶片显著提高了浸出效率，将反应时间从15小时缩短到10小时。即使在300 r/min的搅拌速度下，框架叶片的表现也优于500 r/min的螺旋桨。动力学分析表明，浸出过程受表面化学反应控制。CFD-PBM模拟结果表明，300 r/min的框架叶片比500 r/min的螺旋桨叶片产生更大的气泡和更高的湍流动能。框架叶片提高浸出效率，通过细化气泡大小，以改善氧的传质，并通过增加湍流动能，以更好地混合。

引用次数: 0

Prediction of temperature and strain rate dependent flow behaviors for AA6061-T4 sheet using phenomenology and machine learning-based approaches 基于现象学和机器学习方法的AA6061-T4板材温度和应变速率相关流动行为预测

IF 4.7 1区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Transactions of Nonferrous Metals Society of China

Pub Date : 2025-11-01 DOI: 10.1016/S1003-6326(25)66902-0

Zhi-hao WANG , D. GUINES , Jia-shuo QI , Xing-rong CHU , L. LEOTOING

The plastic flow behaviors of AA6061-T4 sheets at different temperatures (21-300 °C) and strain rates (0.002-4 s^-1) were studied. Significant nonlinear effects of temperature and strain rate on flow behaviors were revealed, as well as underlying micromechanical factors. Phenomenology and machine learning-based constitutive models were developed. Both models were formulated in the framework of a temperature-dependent linear combination regulated by a transition function to capture the evolution of strain-hardening behavior with increasing temperature. Novel mathematical functions for describing temperature and strain rate sensitivities were formulated for the phenomenological constitutive model. The threshold temperature related to microstructure evolution was considered in the modeling. A data-enrichment strategy based on extrapolating experimental data via classical strain hardening laws was adopted to improve neural network training. An efficient inverse identification strategy, focusing solely on the transition function, was proposed to enhance the prediction accuracy of post-necking deformation by both constitutive models.

研究了不同温度（21 ~ 300℃）和应变速率（0.002 ~ 4 s-1）下AA6061-T4板材的塑性流动行为。揭示了温度和应变速率对流动行为的显著非线性影响，以及潜在的微观力学因素。开发了基于现象学和机器学习的本构模型。这两个模型都是在一个由过渡函数调节的温度相关线性组合框架中制定的，以捕捉随温度升高应变硬化行为的演变。为现象学本构模型建立了描述温度和应变率敏感性的新数学函数。在建模中考虑了与微观组织演化相关的阈值温度。采用基于经典应变硬化规律外推实验数据的数据充实策略来改进神经网络训练。为了提高两种本构模型对颈缩后变形的预测精度，提出了一种仅关注过渡函数的有效反识别策略。

{"title":"Prediction of temperature and strain rate dependent flow behaviors for AA6061-T4 sheet using phenomenology and machine learning-based approaches","authors":"Zhi-hao WANG , D. GUINES , Jia-shuo QI , Xing-rong CHU , L. LEOTOING","doi":"10.1016/S1003-6326(25)66902-0","DOIUrl":"10.1016/S1003-6326(25)66902-0","url":null,"abstract":"<div><div>The plastic flow behaviors of AA6061-T4 sheets at different temperatures (21-300 °C) and strain rates (0.002-4 s<sup>-1</sup>) were studied. Significant nonlinear effects of temperature and strain rate on flow behaviors were revealed, as well as underlying micromechanical factors. Phenomenology and machine learning-based constitutive models were developed. Both models were formulated in the framework of a temperature-dependent linear combination regulated by a transition function to capture the evolution of strain-hardening behavior with increasing temperature. Novel mathematical functions for describing temperature and strain rate sensitivities were formulated for the phenomenological constitutive model. The threshold temperature related to microstructure evolution was considered in the modeling. A data-enrichment strategy based on extrapolating experimental data via classical strain hardening laws was adopted to improve neural network training. An efficient inverse identification strategy, focusing solely on the transition function, was proposed to enhance the prediction accuracy of post-necking deformation by both constitutive models.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 11","pages":"Pages 3617-3637"},"PeriodicalIF":4.7,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145771981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Heterogeneous globularization in lamellar-structured Ti-6Al-4V alloy by heavy warm rolling and annealing treatment 层状组织Ti-6Al-4V合金重温轧制和退火处理的非均匀球化

IF 4.7 1区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Transactions of Nonferrous Metals Society of China

Pub Date : 2025-11-01 DOI: 10.1016/S1003-6326(25)66908-1

Xiao-feng WU , Li-ming FU , Shuo MA , Ai-dang SHAN

The impact of rolling temperature and the crystallographic orientation of α-colonies on the globularization behavior of lamellar α+β microstructure in Ti-6Al-4V alloy was investigated. Firstly, the lamellar structure was heavily rolled at 600, 700, 800 and 900 °C, respectively. Heavy rolling from temperatures of 600 to 900 °C resulted in an increased volume fraction and thickness of β lamellae, while the corresponding parameters for α lamellae decreased. Then, these rolled α+β lamellar microstructures were spheroidized into equiaxed grains upon subsequent annealing. The results demonstrate that the globularization fraction of the lamellar structures diminishes as the rolling temperature increases. Additionally, the globularization fraction for α-colonies with hard crystallographic orientations, such as 〈0001〉//ND and 〈0001〉//TD, is considerably lower compared to those with softer orientations, positioned at certain angles to ND, RD, and TD during annealing process. This results in heterogeneous globularization of α lamellae, leading to the development of pronounced sharp micro-texture. Furthermore, the slipping deformations of α-colonies with varying crystallographic orientations during rolling were meticulously analyzed.

研究了轧制温度和α-菌落的结晶取向对Ti-6Al-4V合金层状α+β组织球化行为的影响。首先，分别在600、700、800和900℃下对片层组织进行重轧制。600 ~ 900℃的高温轧制导致β片层的体积分数和厚度增加，而α片层的相应参数减小。退火后，这些轧制的α+β片层组织球化为等轴晶粒。结果表明：随着轧制温度的升高，层状组织的球化率逐渐减小；此外，与与ND、RD和TD成一定角度的较软取向α-菌落相比，在退火过程中，< 0001 > //ND和< 0001 > //TD等硬取向α-菌落的球化分数要低得多。这导致α片层的非均匀球化，从而形成明显的尖锐显微织构。进一步分析了不同取向α-菌落在轧制过程中的滑移变形。

{"title":"Heterogeneous globularization in lamellar-structured Ti-6Al-4V alloy by heavy warm rolling and annealing treatment","authors":"Xiao-feng WU , Li-ming FU , Shuo MA , Ai-dang SHAN","doi":"10.1016/S1003-6326(25)66908-1","DOIUrl":"10.1016/S1003-6326(25)66908-1","url":null,"abstract":"<div><div>The impact of rolling temperature and the crystallographic orientation of α-colonies on the globularization behavior of lamellar α+β microstructure in Ti-6Al-4V alloy was investigated. Firstly, the lamellar structure was heavily rolled at 600, 700, 800 and 900 °C, respectively. Heavy rolling from temperatures of 600 to 900 °C resulted in an increased volume fraction and thickness of β lamellae, while the corresponding parameters for α lamellae decreased. Then, these rolled α+β lamellar microstructures were spheroidized into equiaxed grains upon subsequent annealing. The results demonstrate that the globularization fraction of the lamellar structures diminishes as the rolling temperature increases. Additionally, the globularization fraction for α-colonies with hard crystallographic orientations, such as 〈0001〉//ND and 〈0001〉//TD, is considerably lower compared to those with softer orientations, positioned at certain angles to ND, RD, and TD during annealing process. This results in heterogeneous globularization of α lamellae, leading to the development of pronounced sharp micro-texture. Furthermore, the slipping deformations of α-colonies with varying crystallographic orientations during rolling were meticulously analyzed.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 11","pages":"Pages 3714-3733"},"PeriodicalIF":4.7,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145771948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced inhibition of chalcopyrite in molybdenite flotation by combined oxidation of microwave and H2O2 微波与H2O2复合氧化对辉钼矿浮选中黄铜矿的抑制作用增强

IF 4.7 1区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Transactions of Nonferrous Metals Society of China

Pub Date : 2025-11-01 DOI: 10.1016/S1003-6326(25)66917-2

Ji-wei XUE, Qi-hong LIU, Tong LIU, He WAN, Sen WANG, Xian-zhong BU

The effects of combined microwave and hydrogen peroxide (H₂O₂) oxidation on the flotation separation of molybdenite and chalcopyrite, as well as the underlying mechanism were investigated via microflotation, zeta potential, contact angle, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and atomic force microscopy (AFM) analyses. The microflotation experiments showed that the effective inhibition of chalcopyrite can be obtained through combined oxidation pretreatments with low microwave power and H₂O₂ consumption. The zeta potential, contact angle and XPS analyses indicated that the surface hydrophobicity of molybdenite changed minimally after different treatments, whereas significant amounts of hydrophilic oxidation species were formed on the surface of chalcopyrite, thus decreasing its surface hydrophobicity and floatability. Moreover, the SEM and AFM analyses indicated that more uniform oxidative products were formed on the chalcopyrite surface, further significantly increasing the surface roughness.

通过微浮选、zeta电位、接触角、x射线光电子能谱（XPS）、扫描电镜（SEM）和原子力显微镜（AFM）分析，研究了微波与过氧化氢（H2O2）联合氧化对辉钼矿和黄铜矿浮选分离的影响及其机理。微浮选实验表明，采用低微波功率、低H2O2耗量的复合氧化预处理，可以获得对黄铜矿的有效抑制。zeta电位、接触角和XPS分析表明，不同处理后辉钼矿的表面疏水性变化不大，而黄铜矿表面形成了大量的亲水氧化物质，降低了其表面疏水性和可浮性。此外，SEM和AFM分析表明，黄铜矿表面形成了更均匀的氧化产物，进一步显著提高了表面粗糙度。

{"title":"Enhanced inhibition of chalcopyrite in molybdenite flotation by combined oxidation of microwave and H2O2","authors":"Ji-wei XUE, Qi-hong LIU, Tong LIU, He WAN, Sen WANG, Xian-zhong BU","doi":"10.1016/S1003-6326(25)66917-2","DOIUrl":"10.1016/S1003-6326(25)66917-2","url":null,"abstract":"<div><div>The effects of combined microwave and hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) oxidation on the flotation separation of molybdenite and chalcopyrite, as well as the underlying mechanism were investigated via microflotation, zeta potential, contact angle, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and atomic force microscopy (AFM) analyses. The microflotation experiments showed that the effective inhibition of chalcopyrite can be obtained through combined oxidation pretreatments with low microwave power and H<sub>2</sub>O<sub>2</sub> consumption. The zeta potential, contact angle and XPS analyses indicated that the surface hydrophobicity of molybdenite changed minimally after different treatments, whereas significant amounts of hydrophilic oxidation species were formed on the surface of chalcopyrite, thus decreasing its surface hydrophobicity and floatability. Moreover, the SEM and AFM analyses indicated that more uniform oxidative products were formed on the chalcopyrite surface, further significantly increasing the surface roughness.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 11","pages":"Pages 3852-3868"},"PeriodicalIF":4.7,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145771962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microstructural evolution, mechanical properties and corrosion resistance of Ti-12Ni alloy fabricated by laser powder bed fusion 激光粉末床熔合Ti-12Ni合金的组织演变、力学性能及耐蚀性

IF 4.7 1区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Transactions of Nonferrous Metals Society of China

Pub Date : 2025-11-01 DOI: 10.1016/S1003-6326(25)66909-3

Kai HUANG , Yao-jia REN , Qing-ge WANG , Yi LIU , Quan FU , Ning LI , Ian BAKER , Min SONG , Hong WU

The microstructural evolution, mechanical properties, and corrosion behavior of Ti-12Ni (wt.%) specimens produced by laser powder bed fusion (LPBF) using various volume energy density (VED) processing parameter values were investigated. The results showed that the alloy prepared at a low VED of 67 J/mm³ consisted of near-β grains. At a VED of 133 J/mm³ the alloy exhibited coarse primary Ti₂Ni and fine eutectoid structure. This eutectoid structure consisted of α laths and two types of nanoscale Ti₂Ni, one in the form of short rods and the other with a spherical morphology. Further increase of the VED to 267 J/mm³ led to coarsening of the eutectoid structure. The dispersed Ti₂Ni nanoparticles exhibited a significant strengthening effect. The alloy produced at a VED of 133 J/mm³ showed the greatest strength with a nanohardness of (7.8±0.1) GPa and a compressive strength of (1777±27) MPa. However, the presence of Ni segregation and holes produced by the LPBF processing adversely affected the corrosion resistance of the alloy.

研究了不同体积能量密度（VED）工艺参数下激光粉末床熔化（LPBF） Ti-12Ni （wt.%）试样的组织演变、力学性能和腐蚀行为。结果表明，在67 J/mm3的低电压下制备的合金由近β晶粒组成。在133j /mm3的衍射场下，合金表现出粗大的初生Ti2Ni和细小的共晶组织。这种共晶结构由α条和两种纳米Ti2Ni组成，一种是短棒状的，另一种是球形的。进一步增加到267 J/mm3，导致共析结构的粗化。分散的Ti2Ni纳米颗粒表现出明显的强化效果。在133j /mm3下制备的合金强度最高，其纳米硬度为（7.8±0.1）GPa，抗压强度为（1777±27）MPa。然而，镍偏析的存在和LPBF工艺产生的空穴对合金的耐腐蚀性产生不利影响。

{"title":"Microstructural evolution, mechanical properties and corrosion resistance of Ti-12Ni alloy fabricated by laser powder bed fusion","authors":"Kai HUANG , Yao-jia REN , Qing-ge WANG , Yi LIU , Quan FU , Ning LI , Ian BAKER , Min SONG , Hong WU","doi":"10.1016/S1003-6326(25)66909-3","DOIUrl":"10.1016/S1003-6326(25)66909-3","url":null,"abstract":"<div><div>The microstructural evolution, mechanical properties, and corrosion behavior of Ti-12Ni (wt.%) specimens produced by laser powder bed fusion (LPBF) using various volume energy density (VED) processing parameter values were investigated. The results showed that the alloy prepared at a low VED of 67 J/mm<sup>3</sup> consisted of near-β grains. At a VED of 133 J/mm<sup>3</sup> the alloy exhibited coarse primary Ti<sub>2</sub>Ni and fine eutectoid structure. This eutectoid structure consisted of α laths and two types of nanoscale Ti<sub>2</sub>Ni, one in the form of short rods and the other with a spherical morphology. Further increase of the VED to 267 J/mm<sup>3</sup> led to coarsening of the eutectoid structure. The dispersed Ti<sub>2</sub>Ni nanoparticles exhibited a significant strengthening effect. The alloy produced at a VED of 133 J/mm<sup>3</sup> showed the greatest strength with a nanohardness of (7.8±0.1) GPa and a compressive strength of (1777±27) MPa. However, the presence of Ni segregation and holes produced by the LPBF processing adversely affected the corrosion resistance of the alloy.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 11","pages":"Pages 3734-3750"},"PeriodicalIF":4.7,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145771949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

下一页尾页

类型

全部化学•材料生命科学医学物理工程技术环境•农林材料科学地球科学法学管理学化学环境科学与生态学计算机科学教育学经济学农林科学人文科学生物学数学物理与天体物理心理学综合性期刊其他工业工程理学历史学农学文学信息工程

数据库

全部 ACS Publications Elsevier ieeexplore Springer The Royal Society of Chemistry Wiley

期刊

Transactions of Nonferrous Metals Society of China

全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.

﹀