Scripta Materialia最新文献

Effect of B4C addition on the microstructure and mechanical properties of 304L austenitic stainless steel fabricated using laser powder bed fusion 添加 B4C 对使用激光粉末床熔融技术制造的 304L 奥氏体不锈钢微观结构和机械性能的影响

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-11-15 DOI: 10.1016/j.scriptamat.2024.116458

Xiaoyu Sun , Hang Sun , Zhiguang Zhu , Upadrasta Ramamurty

引用次数: 0

Modelling the evolution of microstructural bands in a martensite/austenite Q&P-processed stainless steel 马氏体/奥氏体 Q&P 加工不锈钢微观结构带演变建模

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-11-14 DOI: 10.1016/j.scriptamat.2024.116457

Gaojie Li , Konstantina Traka , Kees Kwarkernaak, Yaiza Gonzalez-Garcia, Maria J. Santofimia

{"title":"Modelling the evolution of microstructural bands in a martensite/austenite Q&P-processed stainless steel","authors":"Gaojie Li , Konstantina Traka , Kees Kwarkernaak, Yaiza Gonzalez-Garcia, Maria J. Santofimia","doi":"10.1016/j.scriptamat.2024.116457","DOIUrl":"10.1016/j.scriptamat.2024.116457","url":null,"abstract":"<div><div>This work discusses the microstructure evolution observed in a quenching and partitioning (Q&P)-processed martensite/austenite stainless steel during the partitioning step at 400 °C for 300 s, where distinct microstructural bands rich in austenite due to elemental segregation, evolve into a uniform distribution of austenite grains. This phenomenon is characterised and investigated using a model for the carbon partitioning from martensite to austenite coupled with the movement of the martensite-austenite interface. The observed elimination of microstructural bands is found to be related to the topological distribution of austenite grains and the heterogeneity of the thermodynamic equilibrium regime at the various interfaces governing the partitioning process. Furthermore, the concurrence of banding elimination (local equilibrium) and phase growth towards the global equilibrium phase fractions is investigated in the simulations in terms of the role of Mn. It is found that the local equilibrium-negligible partitioning (LENP) conditions lead to the most realistic outcome.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"257 ","pages":"Article 116457"},"PeriodicalIF":5.3,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142653802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Strain glass state in Ni50.3Ti29.7Hf20 high-temperature shape memory alloy Ni50.3Ti29.7Hf20 高温形状记忆合金中的应变玻璃态

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-11-13 DOI: 10.1016/j.scriptamat.2024.116449

Longjia Li , Zhongsheng Yang , Kengfeng Xu , Dingcong Cui , Lei Wang , Zhijun Wang , Junjie Li , Jincheng Wang , Feng He

引用次数: 0

Alternating ductile and brittle cracking mode in medium manganese steel sheets 中锰钢板的韧性和脆性交替开裂模式

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-11-11 DOI: 10.1016/j.scriptamat.2024.116450

Thibaut Heremans , Astrid Perlade , Pascal J. Jacques , Thomas Pardoen

引用次数: 0

An in-situ Raman spectroscopy investigation of the oxidation of proton irradiated and cold-worked 304L stainless steel in oxygenated water at 300°C 质子辐照和冷加工的 304L 不锈钢在 300°C 含氧水中氧化的原位拉曼光谱研究

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-11-11 DOI: 10.1016/j.scriptamat.2024.116447

V.S. Ramsundar, A. Shaik, K. Daub, M.R. Daymond, S.Y. Persaud

引用次数: 0

Measuring the strength of ductile microparticles at extreme strain rates 在极端应变速率下测量韧性微粒的强度

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-11-10 DOI: 10.1016/j.scriptamat.2024.116446

Tyler J. Lucas , Chrisopher A. Schuh

引用次数: 0

Thermo-kinetic origin for strength-ductility trade-off phenomena 强度-电导率折衷现象的热动力学起源

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-11-09 DOI: 10.1016/j.scriptamat.2024.116448

Zhigang Ding , Jincheng Kan , Haoran Peng , Linke Huang , Huaiyu Hou , Feng Liu

{"title":"Thermo-kinetic origin for strength-ductility trade-off phenomena","authors":"Zhigang Ding , Jincheng Kan , Haoran Peng , Linke Huang , Huaiyu Hou , Feng Liu","doi":"10.1016/j.scriptamat.2024.116448","DOIUrl":"10.1016/j.scriptamat.2024.116448","url":null,"abstract":"<div><div>Strength-ductility trade-off has been a long-standing dilemma in materials science, greatly limit the potential applications of various structural materials. Here, we explore the underlying physics of such paradox based on recently proposed generalized stability (GS) criterion. We propose that the strength-ductility trade-off relationship physically dominated by the correlation between thermodynamics driving force (Δ<em>G</em>) and the kinetic energy barrier (<em>Q</em>). Thus, we establish an intrinsic connection between GS criterion and mechanical properties, that high Δ<em>G</em> correspond to high strength, while small GS values associate with high plasticity. Additionally, we find that a new thermo-kinetic correlation ensuring sufficiently slow and steady dislocation slip in nano-twinned crystalline and gradient nanocrystalline, which break the original thermo-kinetic correlation for dislocation slip in nanocrystalline and achieve an excellent strength-ductility balance. This offers a quantitative method to optimize the strength and ductility of metal materials by thermo-kinetic properties.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"257 ","pages":"Article 116448"},"PeriodicalIF":5.3,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142653798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Cooperative game during phase transformations in complex alloy systems 复杂合金体系相变过程中的合作博弈

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-11-07 DOI: 10.1016/j.scriptamat.2024.116440

Dingqi Zhao , Junwei Qiao , Yong Zhang , Peter K. Liaw

{"title":"Cooperative game during phase transformations in complex alloy systems","authors":"Dingqi Zhao , Junwei Qiao , Yong Zhang , Peter K. Liaw","doi":"10.1016/j.scriptamat.2024.116440","DOIUrl":"10.1016/j.scriptamat.2024.116440","url":null,"abstract":"<div><div>Phase-transformation models in high-entropy alloys face a dual challenge of scale and complexity because of their characteristics of complex systems. The phase-transformation theory in simple alloys is based on reductionism, which has limitations when used for complex systems. Under the framework of the renormalization group procedure, a machine-learning method was employed that can describe phase-transformations in alloy systems in a manner that differs from traditional data-driven machine learning. We have constructed a comprehensive alloy dataset, grounded in real experimental data, to validate our models. A 98 % accuracy rate has been achieved by the algorithm in the test set. Using the cooperative game theory to further explain the mathematical model established by machine learning, it is found that the established model can include some phase-transformation criteria found by previous researchers. The findings of this study provide insights into the order-disorder phase transformation in alloys from a new perspective, as well as some specific conclusions that are applicable to the design of complex alloys.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"257 ","pages":"Article 116440"},"PeriodicalIF":5.3,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142653861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Effect of hydrogen on the basal dissociation of 〈a〉-type screw dislocation core in titanium 氢对钛中〈a〉型螺旋位错核心基底解离的影响

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-11-07 DOI: 10.1016/j.scriptamat.2024.116444

Yunping Jia , Yijie Chen , Shuanglin Hu , Xiaosong Zhou

引用次数: 0

Excellent strength-ductility combination in the absence of twinning in a novel single-phase VMnFeCoNi high-entropy alloy 新型单相 VMnFeCoNi 高熵合金在无孪晶的情况下具有优异的强度-电导率组合性能

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-11-05 DOI: 10.1016/j.scriptamat.2024.116430

Aditya Srinivasan Tirunilai, Christoph Somsen, Guillaume Laplanche

{"title":"Excellent strength-ductility combination in the absence of twinning in a novel single-phase VMnFeCoNi high-entropy alloy","authors":"Aditya Srinivasan Tirunilai, Christoph Somsen, Guillaume Laplanche","doi":"10.1016/j.scriptamat.2024.116430","DOIUrl":"10.1016/j.scriptamat.2024.116430","url":null,"abstract":"<div><div>In the field of single-phase high-entropy alloys (HEAs), most research has been limited to a few systems. For example, among the face-centered cubic (FCC) alloys, the Cantor alloy (equiatomic CrMnFeCoNi) and its derivatives have received the greatest attention. Subsequent attempts to produce quinary single-phase FCC HEAs have been largely unsuccessful, except for a few examples such as NiCuPdPtAu (the Freundenberger alloy). In the present work, we show for the first time that the equiatomic VMnFeCoNi alloy, which is not a subset of any previously reported system, has been successfully synthesized as single-phase FCC, with homogeneous composition and random texture. Its room-temperature tensile properties were investigated and compared with those of CrMnFeCoNi. VMnFeCoNi exhibits superior tensile properties to CrMnFeCoNi in terms of yield strength, work hardening behavior, ultimate tensile strength, and ductility. Surprisingly, its remarkable strength-ductility combination was achieved despite the absence of deformation twinning, as confirmed by transmission electron microscopy.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"256 ","pages":"Article 116430"},"PeriodicalIF":5.3,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0