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Dynamic interfacial reconfiguration of P-Co3S4 nanowire electrocatalysts: Synergistic anion engineering for efficient HMF oxidation and hydrogen evolution coupling P-Co3S4纳米线电催化剂的动态界面重构:高效HMF氧化和析氢耦合的协同阴离子工程
IF 10.9 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2025-12-11 DOI: 10.1016/j.jmst.2025.12.007
Taotao Ai, Yanjie Fan, Weiwei Bao, Jie Han, Zhifeng Deng, Peng Jiang, Xueling Wei, Xiangyu Zou, Lizhai Zhang
The development of cost-effective and efficient bifunctional electrocatalysts remains a major challenge in coupling biomass-derived platform molecules, such as 5-hydroxymethylfurfural (HMF), with green hydrogen production. In this study, a P-doped Co3S4/NF electrocatalyst with excellent catalytic activity was successfully synthesized using a novel plasma-assisted doping technique. Electrochemical evaluations demonstrated outstanding performance, achieving a low potential of 1.21 V vs. RHE at 100 mA cm−2 in 1 M KOH containing 20 mM HMF. Anion exchange membrane (AEM) simulations under industrial operating conditions confirmed that the catalyst exhibited long-term electrochemical stability at elevated temperatures while effectively coupling the hydrogen evolution reaction (HER) with the HMF oxidation reaction (HMFOR). In situ Raman spectroscopy revealed the dynamic evolution of sulfur and phosphorus species on the surface of the P-Co3S4/NF electrode. These findings indicate that the active species synergistically enhance HMFOR activity through electro-oxidation, dissolution, and re-adsorption processes, contributing to sustained stability. Furthermore, theoretical calculations showed that phosphorus doping optimizes the adsorption of *OOH intermediates, lowering the reaction energy barrier and enabling highly efficient conversion of HMF into 2,5-furandicarboxylic acid (FDCA). This unique plasma-assisted doping strategy offers valuable insights for the rational design of high-performance transition-metal-based electrocatalysts for integrated biomass conversion and hydrogen production.
开发经济高效的双功能电催化剂仍然是将5-羟甲基糠醛(HMF)等生物质衍生平台分子与绿色制氢相结合的主要挑战。本研究采用新型等离子体辅助掺杂技术成功合成了具有优异催化活性的p掺杂Co3S4/NF电催化剂。电化学评价显示了出色的性能,在含有20 mM HMF的1 M KOH中,在100 mA cm - 2条件下,与RHE相比,达到了1.21 V的低电位。工业操作条件下的阴离子交换膜(AEM)模拟证实了该催化剂在高温下具有长期的电化学稳定性,同时有效地耦合了析氢反应(HER)和HMF氧化反应(HMFOR)。原位拉曼光谱揭示了P-Co3S4/NF电极表面硫和磷的动态演化。这些发现表明,活性物质通过电氧化、溶解和再吸附过程协同增强HMFOR活性,有助于维持稳定性。此外,理论计算表明,磷掺杂优化了*OOH中间体的吸附,降低了反应能垒,使HMF高效转化为2,5-呋喃二羧酸(FDCA)。这种独特的等离子体辅助掺杂策略为合理设计用于生物质转化和制氢的高性能过渡金属基电催化剂提供了有价值的见解。
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引用次数: 0
Portevin–Le Chatelier effect in additively manufactured Al–Mg–Sc–Zr alloy: Effects of temperature, strain rate, and microstructure 增材制造Al-Mg-Sc-Zr合金中的Portevin-Le Chatelier效应:温度、应变速率和显微组织的影响
IF 10.9 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2025-12-11 DOI: 10.1016/j.jmst.2025.12.009
Yuntian Ning, Qiang Li, Xiaoyu Sun, Chunlu Zhao, Zhenmin Li, Wenhe Liao, Zhiguang Zhu, Upadrasta Ramamurty
The Portevin–Le Chatelier (PLC) effect, arising from dynamic strain aging (DSA), manifests as serrated flow during plastic deformation. While extensively studied in conventionally manufactured (CM) aluminum alloys, its behavior in additively manufactured (AM) counterparts remains poorly understood. In this work, the effects of temperature (<em>T</em>), strain rate (<span><span style=""></span><span data-mathml='<math xmlns="http://www.w3.org/1998/Math/MathML"><mover is="true"><mrow is="true"><mi is="true">&#x3B5;</mi></mrow><mi is="true">&#x2D9;</mi></mover></math>' role="presentation" style="font-size: 90%; display: inline-block; position: relative;" tabindex="0"><svg aria-hidden="true" focusable="false" height="2.317ex" role="img" style="vertical-align: -0.235ex;" viewbox="0 -896.2 466.5 997.6" width="1.083ex" xmlns:xlink="http://www.w3.org/1999/xlink"><g fill="currentColor" stroke="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)"><g is="true"><g is="true"><g is="true"><use xlink:href="#MJMATHI-3B5"></use></g></g><g is="true" transform="translate(56,265)"><use transform="scale(0.707)" xlink:href="#MJMAIN-2D9"></use></g></g></g></svg><span role="presentation"><math xmlns="http://www.w3.org/1998/Math/MathML"><mover is="true"><mrow is="true"><mi is="true">ε</mi></mrow><mi is="true">˙</mi></mover></math></span></span><script type="math/mml"><math><mover is="true"><mrow is="true"><mi is="true">ε</mi></mrow><mi is="true">˙</mi></mover></math></script></span>), and microstructure (grain morphologies and precipitates) on the PLC behavior of a representative laser powder bed fused (LPBF) Al–Mg–Sc–Zr alloy are investigated. The PLC behavior exhibits strong dependence on <em>T</em> and <span><span style=""></span><span data-mathml='<math xmlns="http://www.w3.org/1998/Math/MathML"><mover is="true"><mrow is="true"><mi is="true">&#x3B5;</mi></mrow><mi is="true">&#x2D9;</mi></mover></math>' role="presentation" style="font-size: 90%; display: inline-block; position: relative;" tabindex="0"><svg aria-hidden="true" focusable="false" height="2.317ex" role="img" style="vertical-align: -0.235ex;" viewbox="0 -896.2 466.5 997.6" width="1.083ex" xmlns:xlink="http://www.w3.org/1999/xlink"><g fill="currentColor" stroke="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)"><g is="true"><g is="true"><g is="true"><use xlink:href="#MJMATHI-3B5"></use></g></g><g is="true" transform="translate(56,265)"><use transform="scale(0.707)" xlink:href="#MJMAIN-2D9"></use></g></g></g></svg><span role="presentation"><math xmlns="http://www.w3.org/1998/Math/MathML"><mover is="true"><mrow is="true"><mi is="true">ε</mi></mrow><mi is="true">˙</mi></mover></math></span></span><script type="math/mml"><math><mover is="true"><mrow is="true"><mi is="true">ε</mi></mrow><mi is="true">˙</mi></mover></math></script></span>, occurring only w
动态应变时效(DSA)产生的波特文-勒沙特列(PLC)效应在塑性变形过程中表现为锯齿状流动。虽然在常规制造(CM)铝合金中进行了广泛的研究,但其在增材制造(AM)铝合金中的行为仍然知之甚少。在这项工作中,研究了温度(T)、应变速率(ε˙ε˙)和显微组织(晶粒形貌和析出相)对具有代表性的激光粉末床熔融(LPBF) Al-Mg-Sc-Zr合金PLC行为的影响。PLC行为表现出对T和ε˙ε˙的强烈依赖,仅发生在中间变形窗口内。突出了明显的菌株依赖的锯齿型转变-从l德斯高原的B型到A型或更高菌株的混合(A+B) -这在CM合金中很少观察到。虽然需要进一步研究,但这种转变主要归因于lpbf诱导的双峰结构中粗柱状和超细等轴晶粒之间不断演变的应变分配。直接时效表明,致密的Al3(Sc, Zr)相通过减少应变分配和消耗空位来抑制PLC效应,而过时效后的晶粒粗化则消除了l ders平台。这项工作强调了微观组织不均匀性在控制dsa介导的AM铝合金流动不稳定性中的关键作用。
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引用次数: 0
Facilitated charge separation induced by Ni-doping in hollow Z-scheme heterojunction for photocatalytic coupling benzylamine oxidation with hydrogen evolution 在空心z型异质结中掺杂镍诱导电荷分离光催化偶联苯胺氧化-析氢
IF 10.9 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2025-12-11 DOI: 10.1016/j.jmst.2025.11.055
Shuang Xu, Tengfei Bao, Shuming Li, Xuejing Li, Heng Rao, Weng-Chon (Max) Cheong, Ping She, Jun-Sheng Qin
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引用次数: 0
Achieving superior interfacial stability of the typical MCrAlY bond coat by microstructural regulation 通过微观结构调控,使典型的mccraly粘结层具有优异的界面稳定性
IF 10.9 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2025-12-10 DOI: 10.1016/j.jmst.2025.12.006
Shasha Yang, Yiming Jiang, Minghui Chen, Zebin Bao, Jiemin Wang, Fuhui Wang
A novel bond coat composed of γ/γ′ phases that are in equilibrium with the superalloy substrate (equilibrium phase (EQ)) is achieved by microstructure regulation on the basis of traditional MCrAlY coating. The EQ-bonded LC-thermal barrier coating (TBC) outperforms the NiCrAlY-bonded HC-TBC regarding the thermally grown oxide (TGO) growth rate, interfacial toughness, as well as interdiffusion with the substrate, remarkably enhancing the interfacial stability of the multi-layer system. For HC-TBC, the high elastic strain energy in TGO due to the large thickness and the inferior toughness at the TGO/top coat interface due to the formation of spinel leads to the premature failure of the coating. By comparison, the improved performance of LC-TBC benefits from the intermixed zone (IMZ) development atop TGO, which effectively decreases the growth rate of TGO while simultaneously strengthening interfacial bonding. Both the spinel in HC-TBC and the IMZ in LC-TBC are intimately associated with the initial oxidation behavior. Preferential segregation of oxygen at the heterogeneous interface of γ′/α-Cr in the bond coat of HC-TBC initiates the in-situ oxidation of α-Cr and further results in the formation of spinel. On account of the remarkably reduced segregation energy of oxygen at coherent γ/γ′ interface in bond coat of LC-TBC, uniform θ-Al2O3 forms, facilitating the development of IMZ. The findings in this work challenge conventional wisdom on failure behaviors of TBCs and give new insights into the design of the bond coat with superior interfacial stability.
在传统mccraly涂层的基础上,通过组织调控,获得了一种由与高温合金基体平衡的γ/γ′相组成的新型结合层(平衡相EQ)。eq键合lc -热障涂层(TBC)在热生长氧化物(TGO)生长速率、界面韧性以及与基体的相互扩散方面均优于nicraly键合HC-TBC,显著提高了多层体系的界面稳定性。对于HC-TBC,由于TGO厚度大,其弹性应变能较高,而尖晶石形成导致TGO/面涂层界面韧性较差,导致涂层过早失效。相比之下,LC-TBC性能的提高得益于TGO顶部混合区(IMZ)的发展,这有效地降低了TGO的生长速度,同时增强了界面键合。HC-TBC中的尖晶石和LC-TBC中的IMZ都与初始氧化行为密切相关。HC-TBC结合层γ′/α-Cr非均相界面处氧优先偏析,引发α-Cr原位氧化,形成尖晶石。由于LC-TBC结合层γ/γ′界面处氧的偏析能显著降低,θ-Al2O3形成均匀,有利于IMZ的发展。这项工作的发现挑战了传统观念,并为设计具有优异界面稳定性的结合涂层提供了新的见解。
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引用次数: 0
Multi-Interface engineering in rGO/VO2/EP composites for intelligent and broadband microwave absorption rGO/VO2/EP复合材料智能宽带微波吸收的多界面工程
IF 10.9 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2025-12-10 DOI: 10.1016/j.jmst.2025.12.005
Long Ma, Jiangxiao Song, Haoxu Si, Cuiping Li, Chunhong Gong, Jingwei Zhang
The development of high-performance microwave absorbing materials (MAMs) with broadband operation and temperature-responsive adaptability marks a significant advancement in electromagnetic protection and stealth technologies. Achieving simultaneous broadband absorption and intelligent responsiveness poses challenges in dielectric loss optimization through material selection and structural engineering. This study presents an innovative solution via subwavelength architecture design. We employ a facile electrospray strategy to fabricate reduced graphene oxide microspheres (rGOms) with tunable dimensions, where structural and compositional design further improve microwave absorption. The scale of rGOms correlates with interfacial dipole scales in macroscopic statistics, and their multiscale design results in a broader dielectric relaxation distribution. This synergistically enhances the effective absorption bandwidth (EAB). Furthermore, the discontinuous design of subwavelength units effectively extends the transmission path of electromagnetic waves, leading to additional multiple reflections and scattering within the system. At an equal mass ratio of 700 and 300 μm rGOms, the EAB of rGOms/epoxy (EP) composites reaches 7.2 GHz. Moreover, leveraging dynamic interfacial polarization provided by thermally responsive vanadium dioxide (VO2), the rGOms/VO2/EP composite demonstrates a dynamic adjustment capability that shifts the EAB by 2.6 GHz. This study may serve as a valuable reference for designing intelligent MAMs with broad attenuation frequency ranges based on multi-interface engineering.
具有宽带工作和温度响应适应性的高性能微波吸收材料(MAMs)的发展标志着电磁保护和隐身技术的重大进步。同时实现宽带吸收和智能响应对材料选择和结构工程中的介电损耗优化提出了挑战。本研究提出一种透过亚波长架构设计的创新解决方案。我们采用简单的电喷雾策略来制造具有可调谐尺寸的还原氧化石墨烯微球(rGOms),其结构和成分设计进一步提高了微波吸收。在宏观统计中,rGOms的尺度与界面偶极子尺度相关,其多尺度设计导致更宽的介电弛豫分布。这协同提高了有效吸收带宽(EAB)。此外,亚波长单元的不连续设计有效地延长了电磁波的传输路径,导致系统内额外的多次反射和散射。当rGOms质量比为700 μm和300 μm时,rGOms/环氧树脂复合材料的EAB达到7.2 GHz。此外,利用热响应二氧化钒(VO2)提供的动态界面极化,rGOms/VO2/EP复合材料具有动态调节能力,可将EAB偏移2.6 GHz。该研究可为基于多界面工程设计宽衰减频率范围的智能mam提供有价值的参考。
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引用次数: 0
Manifold microchannel heat sinks enhance the power generation performance of micro-thermoelectric devices 多种微通道散热片提高了微热电器件的发电性能
IF 10.9 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2025-12-09 DOI: 10.1016/j.jmst.2025.11.053
Jun Pei, Hezhang Li, Hua-Lu Zhuang, Jinfeng Dong, Bowen Cai, Jincheng Yu, Zhihang Shan, Xinyuan Qi, Wenyi Chen, Xiao-Lei Shi, Zhi-Gang Chen, Bo-Ping Zhang
Micro thermoelectric devices (micro-TEDs) have emerged as promising candidates for energy harvesting applications. Despite the development of numerous high-performance thermoelectric materials over the past decades, most micro-TEDs still rely heavily on conventional Bi2Te3-based materials. Effectively integrating advanced thermoelectric materials into micro-TEDs remains a significant challenge. In this work, we theoretically match several recently developed high-performance near-room-temperature thermoelectric materials with micro-TEDs and explore the integration of a manifold microchannel (MMC) heat sink on the cold side to significantly enhance the effective temperature difference across the devices. Upon incorporating the MMC heat sink, the maximum power densities of Bi2Te3-, Mg3Sb2-, and SnSe-based micro-TEDs reach 50.32, 29.68, and 31.07 μW mm−2, respectively, representing increases of 60.63-fold, 56.52-fold, and 57.69-fold compared to devices without heat sinks. These results highlight that coupling micro-TEDs with emerging near-room-temperature thermoelectric materials and a well-engineered MMC heat sink offers a promising route for efficient energy harvesting applications.
微型热电器件(Micro - teds)已成为能量收集应用的有前途的候选者。尽管在过去的几十年里开发了许多高性能热电材料,但大多数微型ted仍然严重依赖传统的bi2te3基材料。将先进的热电材料有效地集成到微型ted中仍然是一个重大挑战。在这项工作中,我们从理论上将几种最近开发的高性能近室温热电材料与微型teds相匹配,并探索在冷侧集成歧管微通道(MMC)散热器,以显着提高器件之间的有效温差。在加入MMC散热器后,Bi2Te3-、Mg3Sb2-和snse基微型ted的最大功率密度分别达到50.32、29.68和31.07 μW mm−2,分别比未加入散热器的器件提高了60.63倍、56.52倍和57.69倍。这些结果强调,将微型teds与新兴的近室温热电材料和精心设计的MMC散热器相结合,为高效的能量收集应用提供了一条有前途的途径。
{"title":"Manifold microchannel heat sinks enhance the power generation performance of micro-thermoelectric devices","authors":"Jun Pei, Hezhang Li, Hua-Lu Zhuang, Jinfeng Dong, Bowen Cai, Jincheng Yu, Zhihang Shan, Xinyuan Qi, Wenyi Chen, Xiao-Lei Shi, Zhi-Gang Chen, Bo-Ping Zhang","doi":"10.1016/j.jmst.2025.11.053","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.11.053","url":null,"abstract":"Micro thermoelectric devices (micro-TEDs) have emerged as promising candidates for energy harvesting applications. Despite the development of numerous high-performance thermoelectric materials over the past decades, most micro-TEDs still rely heavily on conventional Bi<sub>2</sub>Te<sub>3</sub>-based materials. Effectively integrating advanced thermoelectric materials into micro-TEDs remains a significant challenge. In this work, we theoretically match several recently developed high-performance near-room-temperature thermoelectric materials with micro-TEDs and explore the integration of a manifold microchannel (MMC) heat sink on the cold side to significantly enhance the effective temperature difference across the devices. Upon incorporating the MMC heat sink, the maximum power densities of Bi<sub>2</sub>Te<sub>3</sub>-, Mg<sub>3</sub>Sb<sub>2</sub>-, and SnSe-based micro-TEDs reach 50.32, 29.68, and 31.07 μW mm<sup>−2</sup>, respectively, representing increases of 60.63-fold, 56.52-fold, and 57.69-fold compared to devices without heat sinks. These results highlight that coupling micro-TEDs with emerging near-room-temperature thermoelectric materials and a well-engineered MMC heat sink offers a promising route for efficient energy harvesting applications.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"15 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145711033","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
Fe–Co–Ni–Ta–B–Si high-entropy bulk metallic glasses with superior thermal stability and high-temperature strength 具有优异热稳定性和高温强度的Fe-Co-Ni-Ta-B-Si高熵大块金属玻璃
IF 10.9 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2025-12-09 DOI: 10.1016/j.jmst.2025.12.003
Mao Cheng, Yanhui Li, Liliang Pan, Wenjing Zhao, Chi Fan, Tieshan Cao, Li Jiang, Wei Zhang
The design of high-entropy bulk metallic glasses (HE-BMGs) offers a promising strategy to achieve exceptional thermal stability and mechanical robustness of high-temperature structural materials. In this work, novel Fe30Co25Ni15RM5B17.5Si7.5 (RM = Nb, Mo, Ta, W) HE-BMGs with a unique combination of superior thermal stability, high-temperature strength, and wear resistance were developed. Among them, the Ta-bearing alloy (Ta5) exhibits the highest crystallization temperature, the widest supercooled liquid region, and the largest critical diameter for glass formation. The Ta5 HE-BMG demonstrates a sluggish crystallization behavior characterized by delayed nucleation and growth of the complex (Fe, Co, Ni)21Ta2B6 primary phase. It also achieves ultrahigh specific strength even at 823 K and superior wear resistance, outperforming most reported HE-BMGs. Annealing at 833 K for 900 s retains its amorphous structure while further enhancing both the strength and wear resistance. Ab initio molecular dynamics simulations reveal that the Ta addition strengthens interatomic interactions, increases local five-fold atomic symmetry, and suppresses atomic diffusion, which rationalizes the experimental observations. With their exceptional combination of thermal and mechanical properties, the developed HE-BMGs, particularly the Ta5 alloy, emerge as promising candidates for high-temperature structural and wear-resistant applications.
高熵体金属玻璃(he - bmg)的设计为实现高温结构材料的优异热稳定性和机械鲁棒性提供了一种有前途的策略。在这项工作中,新型Fe30Co25Ni15RM5B17.5Si7.5 (RM = )Nb, Mo, Ta, W) he - bmg具有优异的热稳定性,高温强度和耐磨性。其中,含ta合金(Ta5)的结晶温度最高,过冷液区最宽,形成玻璃的临界直径最大。Ta5 HE-BMG表现出缓慢的结晶行为,其特征是络合物(Fe, Co, Ni)21Ta2B6初生相的成核和生长延迟。即使在823 K时,它也具有超高的比强度和优异的耐磨性,优于大多数报道的he - bmg。在833 K下退火900 s,保留了非晶结构,同时进一步提高了强度和耐磨性。从头算分子动力学模拟表明,Ta的加入增强了原子间的相互作用,增加了局部五重原子对称性,抑制了原子扩散,使实验结果更加合理。由于具有优异的热性能和机械性能,开发的he - bmg,特别是Ta5合金,成为高温结构和耐磨应用的有前途的候选者。
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引用次数: 0
Unveiling post-deformation transformation mechanism and ferrite microstructure evolution for tailoring mechanical properties of low-carbon martensitic steels 揭示低碳马氏体钢变形后转变机理及铁素体组织演变
IF 10.9 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2025-12-09 DOI: 10.1016/j.jmst.2025.12.004
Zelin Tong, Chenghui Xia, Wei Li, Wei Ding, Baoqi Guo, Na Min, Wu Gong, Stefanus Harjo, Nobuhiro Tsuji
The present study revealed the intrinsic mechanism of post-deformation (relaxation after deformation) ferrite transformation and validated that manipulating grain size and volume fraction of ferrite enhances strength-ductility synergy in a low-carbon martensitic steel. In-situ neutron diffraction and microscopic investigations uncovered that austenite to ferrite transformation preferentially occurs at austenite grain boundaries during relaxation due to localized dislocation concentration. According to the in-situ neutron diffraction measurements, the retained dislocation density was obviously higher than the level before deformation during relaxation at 755°C. Conversely, dislocation density could fully decrease to the level prior to deformation during relaxation at 765°C. Thermodynamic calculations demonstrated that high chemical driving force with sufficient dislocations effectively enhances nucleation and coalescence of similarly oriented grains. Meanwhile, the stored dislocations during relaxation govern the types of transformation behaviors. Therefore, distinct transformation behaviors allow precise tuning of ferrite microstructural features: grain size and volume fraction. This strategy, leveraging the heterogeneity in grain-boundary transformation by holding various relaxation times, increases the mechanical properties of low-carbon martensitic steel. These findings provide valuable microstructure design concepts for overcoming the strength-ductility trade-off in high-strength martensitic steels.
本研究揭示了形变后(形变后松弛)铁素体转变的内在机制,并验证了控制铁素体的晶粒尺寸和体积分数可以提高低碳马氏体钢的强度-塑性协同效应。原位中子衍射和显微观察发现,由于局域位错集中,弛豫过程中奥氏体向铁素体的转变优先发生在奥氏体晶界处。原位中子衍射测量结果表明,在755℃下松弛过程中,位错密度明显高于变形前的水平。相反,在765℃的松弛过程中,位错密度可以完全降低到变形前的水平。热力学计算表明,高的化学驱动力和足够的位错能有效地促进相似取向晶粒的形核和聚并。同时,松弛过程中储存的位错决定了相变行为的类型。因此,不同的转变行为允许精确调整铁素体的微观结构特征:晶粒尺寸和体积分数。这种策略通过保持不同的松弛时间来利用晶界转变的非均匀性,提高了低碳马氏体钢的力学性能。这些发现为克服高强度马氏体钢的强度-延性权衡提供了有价值的微观结构设计概念。
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引用次数: 0
Retraction notice to "Macro to nanoscale deformation of transformation-induced plasticity steels: impact of aluminum on the microstructure and deformation behavior" [JMST, Volume 34, Issue 5, May 2018, Pages 745-755] “变形诱发塑性钢的宏观到纳米尺度变形:铝对微观组织和变形行为的影响”[JMST, vol . 34, Issue 5, 2018, Pages 745-755]
IF 10.9 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2025-12-09 DOI: 10.1016/j.jmst.2025.11.035
V.S.Y. Injeti, Z.C. Li, B. Yu, R.D.K. Misra, Z.H. Cai, H. Ding
This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/policies/article-withdrawal).
本文已被撤回:请参见Elsevier文章撤回政策(https://www.elsevier.com/about/policies/article-withdrawal)。
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引用次数: 0
Corrigendum to “Enhancing the cavitation erosion resistance of additive manufactured Al-Si alloys with strong connective Si networks” [J. Mater. Sci. Technol. 230 (2025) 258-269] “增强具有强结合力硅网络的添加剂制造Al-Si合金的抗空化侵蚀性能”的勘误[J]。板牙。科学。技术。230 (2025)258-269]
IF 10.9 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2025-12-08 DOI: 10.1016/j.jmst.2025.12.002
Cheng-Cheng Pan, Junwei Sha, Dezheng Sun, Zhenbo Qin, Wenbin Hu, Yashar Behnamian, Da-Hai Xia
{"title":"Corrigendum to “Enhancing the cavitation erosion resistance of additive manufactured Al-Si alloys with strong connective Si networks” [J. Mater. Sci. Technol. 230 (2025) 258-269]","authors":"Cheng-Cheng Pan, Junwei Sha, Dezheng Sun, Zhenbo Qin, Wenbin Hu, Yashar Behnamian, Da-Hai Xia","doi":"10.1016/j.jmst.2025.12.002","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.12.002","url":null,"abstract":"","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"93 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145704984","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
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