咨询与建议

看过本文的还看了

相关文献

该作者的其他文献

文献详情 >Enhanced nanocrystalline stabi... 收藏

Enhanced nanocrystalline stability of BCC iron via copper segregation

作     者:Feiyang Wang Linshuo Dong Hong-Hui Wu Penghui Bai Shuize Wang Guilin Wu Junheng Gao Jiaming Zhu Xiaoye Zhou Xinping Mao Feiyang Wang;Linshuo Dong;Hong-Hui Wu;Penghui Bai;Shuize Wang;Guilin Wu;Junheng Gao;Jiaming Zhu;Xiaoye Zhou;Xinping Mao

作者机构:Beijing Advanced Innovation Center for Materials Genome Engineering Institute for Carbon Neutrality University of Science and Technology Beijing Institute of Materials Intelligent Technology Liaoning Academy of Materials  3. Institute of Steel Sustainable Technology Liaoning Academy of Materials School of Civil Engineering Shandong University Department of Materials Science and Engineering Shenzhen MSU-BIT University 

出 版 物:《Progress in Natural Science:Materials International》 (自然科学进展·国际材料(英文))

年 卷 期:2023年第33卷第2期

页      面:185-192页

核心收录:

学科分类:07[理学] 070205[理学-凝聚态物理] 08[工学] 0805[工学-材料科学与工程(可授工学、理学学位)] 080502[工学-材料学] 0703[理学-化学] 0714[理学-统计学(可授理学、经济学学位)] 0701[理学-数学] 0702[理学-物理学] 

基  金:supported by the National Natural Science Foundation of China (Nos. 52122408, 52101019, 51901013, and 52071023) the financial support from the Fundamental Research Funds for the Central Universities (University of Science and Technology Beijing, No. 06500135 and FRF-TP-2021-04C1) supported by USTB Mat Com of Beijing Advanced Innovation Center for Materials Genome Engineering 

主  题:Nanocrystalline alloys Molecular dynamics simulations Grain boundary Thermal stability 

摘      要:Nanocrystalline alloys are known for their high density of grain boundaries(GBs), which results in low thermal stability and a tendency for coarsening. In this work, we investigated Fe–Cu alloys to explore the effects of Cu concentration on the thermal stability of nanocrystalline samples. Using hybrid molecular dynamics(MD) and Monte Carlo(MC) simulations, annealing treatments of nanocrystalline samples with varied Cu concentrations were conducted. The simulation results revealed that Cu atoms tended to accumulate at GBs. Subsequently, the model with Cu segregation was subjected to mechanical creep loading at various temperatures. Through the analysis of atomic structure evolution during creep deformation, it was found that Cu segregation efficiently stabilizes GBs and restricts their movement. The present findings highlight that the thermal stability of nanocrystalline Fe–Cu alloys can be effectively improved by introducing suitable Cu segregation at GBs.

读者评论 与其他读者分享你的观点

用户名:未登录
我的评分