Materials Letters最新文献

英文中文

High-yield-strength TRIP titanium alloy: a low-cost and short-process manufacturing approach

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters

Pub Date : 2025-04-05 DOI: 10.1016/j.matlet.2025.138535

Junyang Chen, Zhilei Xiang, Cheng Qian, Zongyi Zhou, Bing Wang, Jihao Li, Ziyong Chen

This study proposes a high-yield strength and high-toughness transformation-induced plasticity (TRIP) titanium alloy design strategy, utilizing deformation-induced metastable β-phase and localized TRIP effects, while optimizing its fabrication through a short-process thermomechanical treatment. The results show that rolling-induced metastable β-phase can undergo localized TRIP effects during plastic deformation, significantly enhancing the yield strength (1250 MPa) of the alloy and avoiding the issue of yield strength drop in traditional TRIP titanium alloys caused by large-scale SIM (stress-induced martensitic transformation). Furthermore, SIM-dislocation interactions provide a dynamic strengthening mechanism, enabling the alloy to achieve high strength while maintaining excellent strength-ductility synergy. Meanwhile, a short-process fabrication route combining solution treatment and deformation-induced β-phase stability tuning eliminates the aging treatment required in conventional titanium alloys, significantly reducing manufacturing costs while enhancing feasibility for large-scale industrial applications. This design strategy, which leverages deformation-induced metastable structures and localized TRIP effects, achieves ideal mechanical properties, offering new insights for the development of high-strength and high-toughness materials.

{"title":"High-yield-strength TRIP titanium alloy: a low-cost and short-process manufacturing approach","authors":"Junyang Chen, Zhilei Xiang, Cheng Qian, Zongyi Zhou, Bing Wang, Jihao Li, Ziyong Chen","doi":"10.1016/j.matlet.2025.138535","DOIUrl":"10.1016/j.matlet.2025.138535","url":null,"abstract":"<div><div>This study proposes a high-yield strength and high-toughness transformation-induced plasticity (TRIP) titanium alloy design strategy, utilizing deformation-induced metastable β-phase and localized TRIP effects, while optimizing its fabrication through a short-process thermomechanical treatment. The results show that rolling-induced metastable β-phase can undergo localized TRIP effects during plastic deformation, significantly enhancing the yield strength (1250 MPa) of the alloy and avoiding the issue of yield strength drop in traditional TRIP titanium alloys caused by large-scale SIM (stress-induced martensitic transformation). Furthermore, SIM-dislocation interactions provide a dynamic strengthening mechanism, enabling the alloy to achieve high strength while maintaining excellent strength-ductility synergy. Meanwhile, a short-process fabrication route combining solution treatment and deformation-induced β-phase stability tuning eliminates the aging treatment required in conventional titanium alloys, significantly reducing manufacturing costs while enhancing feasibility for large-scale industrial applications. This design strategy, which leverages deformation-induced metastable structures and localized TRIP effects, achieves ideal mechanical properties, offering new insights for the development of high-strength and high-toughness materials.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"392 ","pages":"Article 138535"},"PeriodicalIF":2.7,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143807985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Fabrication of stable MAPbI3 perovskite via e-spray technique- hydration and phase reversibility

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters

Pub Date : 2025-04-05 DOI: 10.1016/j.matlet.2025.138539

K. Tulja Bhavani , Dhavalkumar N. Joshi , Simone Meroni , Trystan Watson , Viresh Dutta

This study reports the fabrication of robust methylammonium lead iodide (MAPI) films via the e-spray technique, utilizing controlled and reversible hydration to enhance optoelectronic properties. Moisture in MAPI-based perovskite solar cells (PSCs) can either recrystallize or degrade the material, depending on the degree of hydration. The formation of hydrated perovskite phases (CH₃NH₃PbI₃·H₂O and CH₃NH₃PbI₃·2H₂O) and their phase reversibility are demonstrated in spray-coated MAPI films deposited under electric fields (E-fields). X-ray diffraction and absorption spectra reveal phase transitions influenced by the E-field during deposition. The resultant films, terminated with PbI₂, exhibit reduced hydration (mono- or di-hydrated phases), forming a robust structure. Upon annealing, these hydrated phases revert to the perovskite phase. This work highlights the beneficial role of controlled hydration in MAPI films, offering insights into improving their stability and optoelectronic performance for PSC applications.

本研究报告介绍了通过电子喷雾技术制造坚固的碘化甲铵铅 (MAPI) 薄膜，利用可控和可逆的水合作用增强光电特性。基于 MAPI 的过氧化物太阳能电池 (PSC) 中的水分会使材料重结晶或降解，具体取决于水合程度。在电场（E-fields）下沉积的喷涂 MAPI 薄膜中显示了水合包晶相（CH3NH3PbI3-H2O 和 CH3NH3PbI3-2H2O）的形成及其相的可逆性。X 射线衍射和吸收光谱显示了沉积过程中受电场影响的相变。以 PbI2 为端基的薄膜呈现出水合减少的现象（单水合或双水合相），形成了坚固的结构。退火时，这些水合相会恢复为包晶相。这项工作强调了受控水合在 MAPI 薄膜中的有益作用，为提高其稳定性和光电性能以用于 PSC 应用提供了启示。

{"title":"Fabrication of stable MAPbI3 perovskite via e-spray technique- hydration and phase reversibility","authors":"K. Tulja Bhavani , Dhavalkumar N. Joshi , Simone Meroni , Trystan Watson , Viresh Dutta","doi":"10.1016/j.matlet.2025.138539","DOIUrl":"10.1016/j.matlet.2025.138539","url":null,"abstract":"<div><div>This study reports the fabrication of robust methylammonium lead iodide (MAPI) films via the e-spray technique, utilizing controlled and reversible hydration to enhance optoelectronic properties. Moisture in MAPI-based perovskite solar cells (PSCs) can either recrystallize or degrade the material, depending on the degree of hydration. The formation of hydrated perovskite phases (CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub>·H<sub>2</sub>O and CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub>·2H<sub>2</sub>O) and their phase reversibility are demonstrated in spray-coated MAPI films deposited under electric fields (E-fields). X-ray diffraction and absorption spectra reveal phase transitions influenced by the E-field during deposition. The resultant films, terminated with PbI<sub>2</sub>, exhibit reduced hydration (mono- or di-hydrated phases), forming a robust structure. Upon annealing, these hydrated phases revert to the perovskite phase. This work highlights the beneficial role of controlled hydration in MAPI films, offering insights into improving their stability and optoelectronic performance for PSC applications.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"392 ","pages":"Article 138539"},"PeriodicalIF":2.7,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Towards green fabrication of PVDF-HFP composite films: Assessing the impact of DMSO and functional fillers (ZnO, BTO, and Rochelle Salt) on the piezo-mechanical properties

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters

Pub Date : 2025-04-05 DOI: 10.1016/j.matlet.2025.138536

Syed Makarim Zaid , Mustapha Danladi Ibrahim , Ab Aziz Bin Baharuddin , K.B. Mustapha

Poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) offers superior compliance among the PVDF-based polymers but lacks adequate piezoelectric property. While certain functional fillers can enhance PVDF-HFP’s piezoelectric property, reinforcement with these fillers relies on environmentally harmful solvents. This raises concerns for the ensuing green applications of PVDF-HFP. This study investigates the use of DMSO (a green solvent) for reinforcing PVDF-HFP with barium titanate (BTO), zinc oxide (ZnO), and Rochelle salt (RS). Results show DMSO preserves the nucleation efficiency of the fillers, thus enabling notable β-phase transformation associated with the piezoelectric response. BTO/RS reinforcement achieved the highest β-phase content (78%) compared to ZnO/RS (66%). Further crystallographic and thermo-mechanical characterizations confirmed BTO/RS’s superiority in enhancing thermal stability.

引用次数: 0

Preparation and antibacterial properties of porous alumina ceramics coated with silver nanoparticles

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters

Pub Date : 2025-04-05 DOI: 10.1016/j.matlet.2025.138531

Guanwen Zou , Jiqing Bao

Porous Al₂O₃ ceramics with high porosity and high mechanical properties were prepared by adding transparent glaze to the raw material. AgNPs were coated on porous Al₂O₃ ceramics by a chemical reduction method. The porous Al₂O₃ ceramics coated with AgNPs had high antibacterial properties, and the antibacterial rate against S. aureus was up to 98.8 %. After 30 times soaking, the antibacterial rate still reached 74.7 %, showing excellent cycling performance, and can be widely used in swimming pools, fish tanks, flushing toilet tanks and other daily disinfection occasions.

通过在原材料中添加透明釉料，制备了具有高孔隙率和高机械性能的多孔 Al2O3 陶瓷。通过化学还原法将 AgNPs 涂覆在多孔 Al2O3 陶瓷上。包覆了 AgNPs 的多孔 Al2O3 陶瓷具有很高的抗菌性能，对金黄色葡萄球菌的抗菌率高达 98.8%。经过 30 次浸泡后，抗菌率仍能达到 74.7%，显示出优异的循环性能，可广泛应用于游泳池、鱼缸、冲厕池等日常消毒场合。

引用次数: 0

Study on the bandgap broadening of two-dimensional acoustic crystals by structure-induced equivalent mass change

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters

Pub Date : 2025-04-04 DOI: 10.1016/j.matlet.2025.138530

Tao Wei , Chi Mingxiang , Chen Shibin , Chen Yutao , Chen Bin

Research has found that low-frequency broadband phononic crystals can effectively reduce vibration and noise. This paper proposes a method to broaden the bandgap of phononic crystals by adjusting the unit cell structure. Three-component phononic crystal unit cells were designed and optimized based on specific parameters. The study explored the effects of structural changes on the equivalent mass and bandgap characteristics of unilateral three-component and matrix-based five-component symmetrical structures. By transforming cylindrical scatterers into other shapes, the bandgap width was increased. This discovery is beneficial for broadening the bandgap without changing materials, which is advantageous for engineering applications.

引用次数: 0

A facile strategy of “laser scanning method” to fabricating boron-doped diamond-like carbon anode for organics degradation

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters

Pub Date : 2025-04-04 DOI: 10.1016/j.matlet.2025.138533

Xiao Liu, Shengli Zhu, Zhenduo Cui, Zhaoyang Li, Wence Xu, Zhonghui Gao, Lili Ma, Yanqin Liang, Hui Jiang

Boron-doped diamond-like carbon (DLC) were synthesized by using laser scanning technology without any vacuum or protective atmosphere. Such extreme transient high temperature and high pressure environment during the laser scanning process is accordance with “the Diamond stable region” in carbon phase diagram, ensuring the successful synthesis of diamond phase on Ti substrate. Electrochemical data display that high-dose of boron doping (Ni₈CB₉₆) could significantly enhance the electrochemical performance compared to DLC films with low-dose and none-boron doping, thus producing abundant reactive ⋅OH to decompose phenol more efficiently.

引用次数: 0

High-performance microcantilever humidity sensor based on novel chitosan/montmorillonite composite 基于新型壳聚糖/蒙脱石复合材料的高性能微悬臂湿度传感器

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters

Pub Date : 2025-04-03 DOI: 10.1016/j.matlet.2025.138529

Tiantian Yin, Changguo Xue, Zixuan Li, Yiruo Zhang, Mengyu Xu, Song Liu, Liang Li

This paper presents a microcantilever humidity sensor based on chitosan (CS)/montmorillonite (MMT) composite. At room temperature, the sensor exhibits remarkable performance, including high sensitivity (508 nm/%RH), minimal humidity hysteresis (<2.5 % RH), rapid response and recovery times (24 s/25 s), and long-term stability across a relative humidity range of 10 %–85 %. The morphology and structure of the CS/MMT composite were analyzed using scanning electron microscopy (SEM), X-ray diffraction (XRD), and contact angle measurements. Its excellent moisture sensitivity is attributed to the composite’s ability to retain the film-forming properties of CS while increasing the specific surface area and hydrophilicity through MMT incorporation. Therefore, the CS/MMT composite demonstrates significant potential as a moisture-sensitive material.

本文介绍了一种基于壳聚糖（CS）/蒙脱石（MMT）复合材料的微悬臂湿度传感器。在室温下，该传感器表现出卓越的性能，包括高灵敏度（508 nm/%RH）、最小湿度滞后（2.5 % RH）、快速响应和恢复时间（24 s/25 s），以及在 10 %-85 % 相对湿度范围内的长期稳定性。利用扫描电子显微镜 (SEM)、X 射线衍射 (XRD) 和接触角测量分析了 CS/MMT 复合材料的形态和结构。其出色的湿气敏感性归功于该复合材料能够保留 CS 的成膜特性，同时通过加入 MMT 增加比表面积和亲水性。因此，CS/MMT 复合材料显示出作为湿敏材料的巨大潜力。

引用次数: 0

Effect of welding speed on the microstructure and mechanical properties of Mo-10Re alloy electron beam welded joints 焊接速度对 Mo-10Re 合金电子束焊接接头微观结构和机械性能的影响

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters

Pub Date : 2025-04-03 DOI: 10.1016/j.matlet.2025.138528

Zhanhua Gan , Guoqing Chen , Xinyan Teng , Lamei Zhang , Junhong Zhao , Xuesong Leng

This study investigated the effects of welding speed on the microstructure and mechanical properties of Mo-10Re alloy electron beam welded (EBW) joints. The weld zone (WZ) was composed of coarse equiaxed grains of a Mo-based solid solution, with oxygen pores concentrated near the fusion line. As welding speed increased from 210 mm/min to 270 mm/min, the following changes were found: the grain size of WZ decreased from 146.1 μm to 110.7 μm; the porosity of WZ increased from 0.23 % to 0.45 %; and the tensile strength of joints increased from 268.2 MPa to 291.3 MPa. All joints failed at the center of the WZ through intergranular fracture, while welding speed had no significant effect on the microhardness of the joints.

本研究探讨了焊接速度对 Mo-10Re 合金电子束焊接（EBW）接头微观结构和机械性能的影响。焊接区（WZ）由钼基固溶体的粗大等轴晶粒组成，氧气孔集中在熔合线附近。随着焊接速度从 210 mm/min 提高到 270 mm/min，发现了以下变化：WZ 的晶粒尺寸从 146.1 μm 减小到 110.7 μm；WZ 的气孔率从 0.23 % 增加到 0.45 %；接头的抗拉强度从 268.2 MPa 提高到 291.3 MPa。所有接头都在 WZ 中心通过晶间断裂失效，而焊接速度对接头的显微硬度没有显著影响。

引用次数: 0

Efficient fabrication of volume diffraction gratings in sapphire with a femtosecond laser

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters

Pub Date : 2025-04-03 DOI: 10.1016/j.matlet.2025.138476

Mengjian Wang , Chaoyue Yan , Xiaofeng Liu , Shengzhi Sun , Jianrong Qiu

Volume Bragg grating was fabricated directly inside sapphire crystals via point-by-point (PbP) processing based on the femtosecond laser filamentation effect. Spontaneous growth of the filament-forming region and significant refractive index changes along the laser incidence direction were observed with increasing the number of scans. In addition, the paper proposes a convenient process for fabricating a 1.2 mm × 1.2 mm × 0.0155 mm grating in 4 min using laser PbP scanning. The grating’s maximum diffraction efficiency reaches 75.2 % under optimal parameters. A VBG preparation scheme ensures stable operation in extreme environments. After annealing at 1100°C for 5 h, the diffraction efficiency only decreased 3 %. This study proposes a strategy to prepare volume grating by femtosecond laser direct writing, offering a solution for fabricating sapphire optical devices.

引用次数: 0

Low-velocity impact response of 590DP/AA6061 flow drill screw joints

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters

Pub Date : 2025-04-03 DOI: 10.1016/j.matlet.2025.138524

Zhichao Huang , Qiming Ma , Fengwu Shan , Jing Qiu , Shengwen Wang , Xiaoyong Nie

A flow drill screw (FDS) is a novel single-sided joining process that is capable of achieving high-quality joins between steel and aluminum dissimilar materials in vehicle body manufacturing. The low-velocity impact response of 590DP/AA6061 FDS joints was investigated. The FDS joints exhibit strong impact resistance and damage resistance. The plastic deformation induced by a 40 J impact increases the contact force between the sheets during the tensile test, resulting in a certain increase in the tensile strength of the FDS joints. Even when the impact energy reaches 80J, the joint can maintain an energy absorption rate of 94.3 %. However, its static performance and energy absorption capacity are reduced by 10.3 % and 32.2 %, respectively.

流动钻杆（FDS）是一种新型的单面连接工艺，能够在车身制造中实现钢铝异种材料之间的高质量连接。研究了 590DP/AA6061 FDS 接头的低速冲击响应。FDS 接头表现出很强的抗冲击性和抗破坏性。在拉伸试验中，40 J 的冲击力引起的塑性变形增加了板材之间的接触力，从而使 FDS 接头的拉伸强度有了一定程度的提高。即使冲击能量达到 80J，接头也能保持 94.3% 的能量吸收率。不过，其静态性能和能量吸收能力分别降低了 10.3% 和 32.2%。

引用次数: 0

首页上一页

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

Materials Letters

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.

﹀