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Study on hydrogen desorption behavior under elastic stress using cryogenic thermal desorption spectroscopy 低温热解吸光谱法研究弹性应力下氢的解吸行为
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-05-30 DOI: 10.1016/j.matlet.2025.138855
Fenghua Lu , Hongzhou Lu , Wei Li
{"title":"Study on hydrogen desorption behavior under elastic stress using cryogenic thermal desorption spectroscopy","authors":"Fenghua Lu ,&nbsp;Hongzhou Lu ,&nbsp;Wei Li","doi":"10.1016/j.matlet.2025.138855","DOIUrl":"10.1016/j.matlet.2025.138855","url":null,"abstract":"<div><div>Hydrogen-defect interactions behavior is critical to solving the hydrogen embrittlement (HE) problem. Exploring the hydrogen desorption behavior under elastic stress is essential for gaining insights into the HE mechanism. The thermal desorption spectroscopy (TDS) technology is efficient for investigating the hydrogen diffusion and trapping behaviors. In this study, we introduced a cryogenic holder to minimize hydrogen diffusion during the vacuum process and employed cryogenic TDS to examine the effect of elastic stress on hydrogen desorption behavior in martensite and martensite-ferrite. Our findings reveal that elastic stress shifts the desorption peak in dual-phase steel, but cannot alter the trap activation energy, meanwhile, the desorption peak in martensite remains unchanged and the activation energy decreases. This indicates that different internal stress in the microstructure has different effects on hydrogen diffusion and trapping ability, shedding new light on the behavior of hydrogen in materials subjected to stress.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"397 ","pages":"Article 138855"},"PeriodicalIF":2.7,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144178742","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
Embrittlement of 1Cr-1/2Mo pressure vessel steel during long-term service 1Cr-1/2Mo压力容器钢在长期使用过程中的脆化
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-05-30 DOI: 10.1016/j.matlet.2025.138857
Nitin Saini, Zhe Lyu, Leijun Li
{"title":"Embrittlement of 1Cr-1/2Mo pressure vessel steel during long-term service","authors":"Nitin Saini,&nbsp;Zhe Lyu,&nbsp;Leijun Li","doi":"10.1016/j.matlet.2025.138857","DOIUrl":"10.1016/j.matlet.2025.138857","url":null,"abstract":"<div><div>Assessing the mechanical properties of in-service pressure vessels is essential to ensure their safe and continued operation. 1Cr-1/2Mo steel samples are collected from pressure vessels with different years of service exposure. Sub-size flat tensile specimens are tested, and the results show that with an increasing service exposure time, samples exhibited an increased strength, but a decreased ductility compared to the original material. Precipitation of nanoscale carbides within the ferrite/bainite grains has contributed to strengthening the material while the decrease in ductility is believed to be caused by larger size discontinuous carbide particles on the grain boundaries.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"398 ","pages":"Article 138857"},"PeriodicalIF":2.7,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144222479","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
Formation and binding behaviors of small-sized vacancy clusters in the TiCrVMn alloy TiCrVMn合金中小尺寸空位团簇的形成及结合行为
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-05-30 DOI: 10.1016/j.matlet.2025.138853
Binrong Luo , Guigui Peng , Xianyun Feng , Liuhai Gong , Xianli Ren
{"title":"Formation and binding behaviors of small-sized vacancy clusters in the TiCrVMn alloy","authors":"Binrong Luo ,&nbsp;Guigui Peng ,&nbsp;Xianyun Feng ,&nbsp;Liuhai Gong ,&nbsp;Xianli Ren","doi":"10.1016/j.matlet.2025.138853","DOIUrl":"10.1016/j.matlet.2025.138853","url":null,"abstract":"<div><div>The early-stage growth of defects directly affects the irradiation damage processes. High-entropy alloys have good radiation resistance, while the formation and clustering of vacancy defects, which are crucial to the development of void swelling, remain inadequately investigated. This study examined the formation and binding behaviors of the small-sized vacancy clusters in the TiCrVMn alloy by the first-principle calculations and ab initio molecular dynamics simulations. The energetics and stability exhibit unpredictable due to the complexity of the local chemical environment and lattice distortion. The findings enhance comprehension of the mechanisms related to vacancy evolution in the high-entropy alloys.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"397 ","pages":"Article 138853"},"PeriodicalIF":2.7,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185321","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
Refining microstructure and improving mechanical-corrosion properties of high Zn containing single β-phase Mg-Li alloy via friction stir processing 采用搅拌摩擦法制备高锌单相Mg-Li合金，改善其显微组织和机械腐蚀性能
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-05-30 DOI: 10.1016/j.matlet.2025.138858
Yingxin Geng , Mengran Zhou , Yixing Zhu , Tongzheng Xin , Song Tang , Zhuoran Zeng , Gaoqiang Chen , Ruizhi Wu , Qingyu Shi
{"title":"Refining microstructure and improving mechanical-corrosion properties of high Zn containing single β-phase Mg-Li alloy via friction stir processing","authors":"Yingxin Geng ,&nbsp;Mengran Zhou ,&nbsp;Yixing Zhu ,&nbsp;Tongzheng Xin ,&nbsp;Song Tang ,&nbsp;Zhuoran Zeng ,&nbsp;Gaoqiang Chen ,&nbsp;Ruizhi Wu ,&nbsp;Qingyu Shi","doi":"10.1016/j.matlet.2025.138858","DOIUrl":"10.1016/j.matlet.2025.138858","url":null,"abstract":"<div><div>In this study, a β-phase Mg-14Li-22Zn alloy with high Zn content was fabricated via friction stir processing, demonstrating great potential for high-performance lightweight applications. The influence of tool rotation speed on microstructure evolution, mechanical properties, and corrosion behavior was investigated. Notably, significant improvements in compressive strength, work-hardening rate, and corrosion resistance were achieved, particularly at a tool rotation speed of 400 rpm, due to the uniform dispersion of MgZn<sub>2</sub> and MgLi<sub>2</sub>Zn phases within the fine-grained microstructure.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"397 ","pages":"Article 138858"},"PeriodicalIF":2.7,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144195037","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
Unveiling TWIP and TRIP plasticity mechanisms in AlCoCuNi high entropy alloy through molecular dynamics 从分子动力学角度揭示AlCoCuNi高熵合金的TWIP和TRIP塑性机理
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-05-30 DOI: 10.1016/j.matlet.2025.138852
Soroosh Mohammadi, Farshad Akhlaghi
{"title":"Unveiling TWIP and TRIP plasticity mechanisms in AlCoCuNi high entropy alloy through molecular dynamics","authors":"Soroosh Mohammadi,&nbsp;Farshad Akhlaghi","doi":"10.1016/j.matlet.2025.138852","DOIUrl":"10.1016/j.matlet.2025.138852","url":null,"abstract":"<div><div>High entropy alloys are a new class of materials introduced in 2004. The use of computational tools to study and develop these alloys has recently gained significant attention. Among these tools, molecular dynamics (MD) simulation stands out as a powerful method for examining material behavior at the atomic scale. However, one of the primary challenges in MD simulations is the availability of reliable potentials that can accurately predict material behavior at the atomic level. In this study, the behavior of the AlCoCuNi high entropy alloy under uniaxial tensile testing was analyzed using MD simulations, employing a MD potential that developed for multicomponent systems. The results indicate that the single-phase FCC AlCoCuNi alloy is not stable after deformation, due to the formation of BCC nuclei under tension. Additionally, the alloy exhibits a high work-hardening capacity, as revealed by the observation of twinning-induced plasticity, transformation-induced plasticity, and dislocation formation. Finally, the findings suggest new methods for developing high entropy alloys using the currently developed potential, which has proven to be both effective and economical.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"397 ","pages":"Article 138852"},"PeriodicalIF":2.7,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144195040","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
Tandem catalytic CO2 electroreduction via in situ restructured silver nanoparticles on copper spheres 串联催化CO2电还原通过在铜球上原位重组银纳米颗粒
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-05-29 DOI: 10.1016/j.matlet.2025.138847
Yue Li , Jingjing Wu , Hongyu Pan , Jing Ling , Qian Zhang , BiYun Min , YiFan Wang , Xianglong Lu
{"title":"Tandem catalytic CO2 electroreduction via in situ restructured silver nanoparticles on copper spheres","authors":"Yue Li ,&nbsp;Jingjing Wu ,&nbsp;Hongyu Pan ,&nbsp;Jing Ling ,&nbsp;Qian Zhang ,&nbsp;BiYun Min ,&nbsp;YiFan Wang ,&nbsp;Xianglong Lu","doi":"10.1016/j.matlet.2025.138847","DOIUrl":"10.1016/j.matlet.2025.138847","url":null,"abstract":"<div><div>The rational design of tandem catalysts with spatially separated active sites is crucial for efficiently converting CO<sub>2</sub> to ethylene. In this study, a Cu@Np-Ag<sub>x.</sub> bimetallic tandem catalyst, with Ag nanoparticles anchored on Cu microspheres, was fabricated via potentiostatic deposition and electrochemical displacement. With 1.4 % surface Ag atom percentage, it exhibits a 36 % ethylene Faraday efficiency at −1.45 V vs. RHE, nine times higher than that of Cu/C, while reducing the hydrogen evolution reaction to 29 %. Based on DFT and in-situ Raman studies, this is mainly ascribed to the copper-silver synergy that optimizes the electron transfer route, enhances the adsorption of *CO, prompts the asymmetric *CO-CHO coupling and the cleavage of the O-C bond in the *OCHCH<sub>2</sub> intermediate, thereby enhancing the generation of ethylene.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"397 ","pages":"Article 138847"},"PeriodicalIF":2.7,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144195038","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
Co/N-doped carbon composites from cobalt-coordinated porous organic polyamines for catalytic reduction of organic dyes 钴配位多孔有机多胺制备的Co/ n掺杂碳复合材料催化还原有机染料
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-05-29 DOI: 10.1016/j.matlet.2025.138849
Jiahua He , Peng Miao , Dong Yang
{"title":"Co/N-doped carbon composites from cobalt-coordinated porous organic polyamines for catalytic reduction of organic dyes","authors":"Jiahua He ,&nbsp;Peng Miao ,&nbsp;Dong Yang","doi":"10.1016/j.matlet.2025.138849","DOIUrl":"10.1016/j.matlet.2025.138849","url":null,"abstract":"<div><div>In this article, the nitrogen-rich organic porous polyamine (PPM) was synthesized by polycondensation of 2,6-pyridinedicarboxaldehyde and melamine under thermal conditions. The synthesized PPM has a high surface area, porosity, and abundant amine groups, especially pyridinic-N and triazine-N. The nitrogen-rich PPM facilitates Co/N coordination between the N species and Co ions, which can be used to load and stabilize cobalt ions. Then, Co/N-doped carbon composites (Co/N-CC) were obtained via pyrolysis of Co-PPM. Cobalt is well dispersed in Co/N-CC, and no obvious aggregation is observed. An improved catalytic activity was demonstrated by the Co/N-CC in the reduction of organic dyes and nitrobenzene compounds.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"397 ","pages":"Article 138849"},"PeriodicalIF":2.7,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169628","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
Inducing ferroelectric o-phase in spray-pyrolyzed ZrO2 by La doping for high-performance InGaZnO ferroelectric thin-film transistors La掺杂在喷雾热解ZrO2中诱导铁电o相用于高性能InGaZnO铁电薄膜晶体管
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-05-29 DOI: 10.1016/j.matlet.2025.138848
Kiwan Ahn , Md Mobaidul Islam , Yeoungjin Chang , Jin Jang
{"title":"Inducing ferroelectric o-phase in spray-pyrolyzed ZrO2 by La doping for high-performance InGaZnO ferroelectric thin-film transistors","authors":"Kiwan Ahn ,&nbsp;Md Mobaidul Islam ,&nbsp;Yeoungjin Chang ,&nbsp;Jin Jang","doi":"10.1016/j.matlet.2025.138848","DOIUrl":"10.1016/j.matlet.2025.138848","url":null,"abstract":"<div><div>We report the La doping effect in ZrO<sub>2</sub> at a substantially lower process temperature of 450 °C. The optimum La doping in ZrO<sub>2</sub> increases the orthorhombic phase fraction due to the reduction of bulk free and surface energy between orthorhombic phase and monoclinic phase. The 30 nm ZrO<sub>2</sub> demonstrates enhanced remnant polarization of 18.4 μC cm<sup>−2</sup> after 8 % La doping. The inverted staggered InGaZnO thin-film transistors are fabricated with 8 % La:ZrO<sub>2</sub> gate oxide, demonstrating memory window tuning from 1.1 to 3.5 V and low subthreshold swing of 43 mV dec<sup>−1</sup> during reverse sweep.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"397 ","pages":"Article 138848"},"PeriodicalIF":2.7,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185325","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
Porous 3D boron nitride meteorite as an efficient and reusable adsorbent for antibiotic removal 多孔三维氮化硼陨石作为一种高效、可重复使用的抗生素去除吸附剂
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-05-29 DOI: 10.1016/j.matlet.2025.138850
Shihao Zhang , Junran Wang , Yanqing Wang , Feng Liu , Lei Ding , Jingjing Qi , Yuzheng Wang , Yuhan Wu , Laishi Li , Yusheng Wu
{"title":"Porous 3D boron nitride meteorite as an efficient and reusable adsorbent for antibiotic removal","authors":"Shihao Zhang ,&nbsp;Junran Wang ,&nbsp;Yanqing Wang ,&nbsp;Feng Liu ,&nbsp;Lei Ding ,&nbsp;Jingjing Qi ,&nbsp;Yuzheng Wang ,&nbsp;Yuhan Wu ,&nbsp;Laishi Li ,&nbsp;Yusheng Wu","doi":"10.1016/j.matlet.2025.138850","DOIUrl":"10.1016/j.matlet.2025.138850","url":null,"abstract":"<div><div>To address environmental pollution induced by coexisting antibiotics, a three-dimensional porous boron nitride meteorite adsorbent (P-BNM) with hierarchical architecture was fabricated via a MgO template-assisted approach. The adsorption performance was systematically investigated for three representative antibiotics: tetracycline (TC), oxytetracycline hydrochloride (OTC), and ciprofloxacin (CIP). The optimized porous structure with enhanced surface area enabled removal efficiencies of 84.9 %, 84.2 %, and 93.7 % for TC, OTC, and CIP, respectively. Effective regeneration of spent P-BNM was demonstrated through thermal treatment at 500 °C for 2 h, retaining removal efficiencies above 88 %, 90 %, and 92 % for TC, OTC, and CIP over five consecutive cycles. This study elucidates that constructing hierarchical BN architectures via MgO-assisted templating enables superior adsorption capacity and size-selective antibiotic removal through precisely tailored pore structures. The developed adsorbent shows promising potential for implementation in advanced water treatment systems.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"397 ","pages":"Article 138850"},"PeriodicalIF":2.7,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144178744","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
Exploring the influence of melting techniques on high entropy Alloys: WAAM versus plasma arc and vacuum melting 探讨熔炼技术对高熵合金的影响：WAAM与等离子弧和真空熔炼
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-05-29 DOI: 10.1016/j.matlet.2025.138846
Jie liu , Anatoliy Zavdoveev , Andrey Klapatyuk , Thierry Baudin , Roman Kozin , Alex Gajvoronskiy , Mykola Skoryk , Dmitry Vedel , Sviatoslav Motrunich , Ji Junwen , Viacheslav Kopylov , Andrii Severyn , Vitaliy Bevz , Elena Pashinska
{"title":"Exploring the influence of melting techniques on high entropy Alloys: WAAM versus plasma arc and vacuum melting","authors":"Jie liu ,&nbsp;Anatoliy Zavdoveev ,&nbsp;Andrey Klapatyuk ,&nbsp;Thierry Baudin ,&nbsp;Roman Kozin ,&nbsp;Alex Gajvoronskiy ,&nbsp;Mykola Skoryk ,&nbsp;Dmitry Vedel ,&nbsp;Sviatoslav Motrunich ,&nbsp;Ji Junwen ,&nbsp;Viacheslav Kopylov ,&nbsp;Andrii Severyn ,&nbsp;Vitaliy Bevz ,&nbsp;Elena Pashinska","doi":"10.1016/j.matlet.2025.138846","DOIUrl":"10.1016/j.matlet.2025.138846","url":null,"abstract":"<div><div>Additive manufacturing technologies are of high priority in application to high entropy alloys (HEA), which are combined unique set of properties. This paper examines the advantages of Wire Arc Additive Manufacturing (WAAM) over conventional techniques such as vacuum melting and plasma arc melting. WAAM is highlighted as a superior method due to its ability to fabricate large-scale components with precise chemical compositions, overcoming the challenges of element evaporation seen in vacuum melting and the scalability issues associated with plasma arc melting. This report underscores WAAM’s potential to improve material manufacturing, and broaden the understanding of WAAM’s technological benefits.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"397 ","pages":"Article 138846"},"PeriodicalIF":2.7,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144203979","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
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