Effects of grain size and temperature on mechanical properties of nano-polycrystalline Nickel-cobalt alloy

doi:10.1016/j.jmrt.2020.09.060

	Effects of grain size and temperature on mechanical properties of nano-polycrystalline Nickel-cobalt alloy
	Lu, Xuefeng; Dong, Changyu; Guo, Xin; Ren, Junqiang; Xue, Hongtao; Tang, Fuling; Ding, Yutian
刊名	Journal of Materials Research and Technology
	2020-11-01
卷号	9 期号:6 页码:1316-13173
关键词	Atoms Binary alloys Grain boundaries Grain growth Grain size and shape Mechanical properties Molecular dynamics Nanocrystals Nickel alloys Plastic flow Polycrystalline materials Temperature Twinning Grain boundary movements Hall Petch relationship High temperature loadings Individual grain boundaries Inverse Hall-Petch relationships Molecular dynamics simulations Polycrystalline alloys Polycrystalline nickels
ISSN号	22387854
DOI	10.1016/j.jmrt.2020.09.060
英文摘要	Influences of grain size and temperature on the mechanical properties of nano-polycrystalline Ni-Co alloy were investigated with molecular dynamics simulations. It is found that the critical grain size of Hall-Petch relationship is 4.3 nm, at which the maximum flow stress of 4.83 GPa is obtained. In samples with the d > 4.3 nm, the average flow stress increases with the decrease of d, according with the Hall-Petch relationship, caused by the dislocation glide and growth of deformation twin with the breaking of individual grain boundaries. For samples with the d © 2020 The Author(s).
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	Elsevier Editora Ltda
WOS记录号	WOS:000606532900009
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150832]
专题	材料科学与工程学院省部共建有色金属先进加工与再利用国家重点实验室
作者单位	State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metal, Department of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Lu, Xuefeng,Dong, Changyu,Guo, Xin,et al. Effects of grain size and temperature on mechanical properties of nano-polycrystalline Nickel-cobalt alloy[J]. Journal of Materials Research and Technology,2020,9(6):1316-13173.
APA	Lu, Xuefeng.,Dong, Changyu.,Guo, Xin.,Ren, Junqiang.,Xue, Hongtao.,...&Ding, Yutian.(2020).Effects of grain size and temperature on mechanical properties of nano-polycrystalline Nickel-cobalt alloy.Journal of Materials Research and Technology,9(6),1316-13173.
MLA	Lu, Xuefeng,et al."Effects of grain size and temperature on mechanical properties of nano-polycrystalline Nickel-cobalt alloy".Journal of Materials Research and Technology 9.6(2020):1316-13173.