Shear-strain induced structural relaxation of Cu Σ3 [110](112) symmetric tilt grain boundary: The role of foreign atoms and temperature

doi:10.1016/j.cap.2021.04.024

CORC > 兰州理工大学 > 兰州理工大学 > 省部共建有色金属先进加工与再利用国家重点实验室

	Shear-strain induced structural relaxation of Cu Σ3 [110](112) symmetric tilt grain boundary: The role of foreign atoms and temperature
	Li, Yang 2; Xue, Hongtao 2; Zhou, Xin 1; Tang, Fuling 2; Li, Xiuyan 1; Ren, Junqiang 2; Lu, Xuefeng 2
刊名	Current Applied Physics
	2021-08-01
卷号	28 页码:19-25
关键词	Alloying elements Atoms Copper Molecular dynamics Nanocrystals Shear flow Shear strain Cu σ3 [110](112) symmetric tilt grain boundary Foreign atoms Grain boundaries relaxations Grain boundary stability Grain-boundaries Nanocrystallines Pure fe Strain induced Symmetrics Tilt grain boundary
ISSN号	15671739
DOI	10.1016/j.cap.2021.04.024
英文摘要	Grain boundaries (GBs) relaxation is a promising and effective strategy to improving GB stability or stabilizing nanocrystalline metals. However, previous studies mainly focused on nanocrystalline pure metals and GB behaviors therein, without considering the role of foreign atoms such as impurity or alloying atoms in GB relaxation. In this work, the shear-strain induced structural relaxation of pure Cu Σ3 [110](112) symmetric tilt GBs (STGBs), and the effects of foreign elements (Fe and Ni) and temperature on the GB relaxation were investigated in detail by molecular dynamics method. The results show that shear strain can trigger the structural relaxation of pure, Fe- and Ni-containing Cu GBs by the emission of Shockley partial dislocations from Cu GBs. Both Fe and Ni have impediment effects on the shear-strain induced GB relaxation, though the content of Fe or Ni atom (0.00165 at.%) is quite low in the GB model. The temperature cannot trigger GB relaxation independently within the considered temperature range, but play a positive role in the shear-strain induced structural relaxations of pure, Fe- and Ni-containing Cu Σ3 [110](112) STGBs. Our work might gain new insights into the mechanically induced GB relaxation in nanocrystalline copper and could be beneficial for improving the stability of Cu GBs. © 2021 Korean Physical Society
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	Elsevier B.V.
WOS记录号	WOS:000662268900004
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150918]
专题	省部共建有色金属先进加工与再利用国家重点实验室材料科学与工程学院图书馆
作者单位	1.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang; 110016, China 2.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Li, Yang,Xue, Hongtao,Zhou, Xin,et al. Shear-strain induced structural relaxation of Cu Σ3 [110](112) symmetric tilt grain boundary: The role of foreign atoms and temperature[J]. Current Applied Physics,2021,28:19-25.
APA	Li, Yang.,Xue, Hongtao.,Zhou, Xin.,Tang, Fuling.,Li, Xiuyan.,...&Lu, Xuefeng.(2021).Shear-strain induced structural relaxation of Cu Σ3 [110](112) symmetric tilt grain boundary: The role of foreign atoms and temperature.Current Applied Physics,28,19-25.
MLA	Li, Yang,et al."Shear-strain induced structural relaxation of Cu Σ3 [110](112) symmetric tilt grain boundary: The role of foreign atoms and temperature".Current Applied Physics 28(2021):19-25.