Deformation behavior of pure titanium with a rare HCP/FCC Boundary: An atomistic study

doi:10.1590/1980-5373-MR-2019-0638

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

	Deformation behavior of pure titanium with a rare HCP/FCC Boundary: An atomistic study
	Ren, Junqiang 1; Liu, Xitong 1; Lei, Qingfeng 1; Wang, Qi 2; Zhang, Xiaobo 1; Zhang, Xudong 3; Lu, Xuefeng 1; Xue, Hongtao 1; Ding, Yutian 1
刊名	Materials Research
	2020
卷号	23 期号:1
关键词	Molecular dynamics Plastic deformation Stress analysis Titanium
ISSN号	15161439
DOI	10.1590/1980-5373-MR-2019-0638
英文摘要	The compressive and tensile behaviors in a Ti nanopillar with a biphasic hexagonal close-packed (HCP)/face-centered cubic (FCC) phase boundary are theoretically researched using classic molecular dynamic simulation. The results indicate that the HCP/FCC interface and free surface of the nanopillar are the sources of dislocation nucleation. The plastic deformation is mainly concentrated in the metastable FCC phase of the biphasic nanopillar. Under compressive loading, a reverse phase transformation of FCC to the HCP phase is induced by the dislocation glide of multiple Shockley partial dislocations 1 6 under compressive loading. However, for tensile loading a large number of Lomer-Cottrell sessile dislocations and stacking fault nets are formed when the partial dislocations react, which leads to an increase in stress. The formation mechanism of a Lomer-Cottrell sessile dislocation is also studied in detail. Shockley partial dislocations are the dominant mode of plastic deformation behaviors in the metastable FCC phase of the biphasic nanopillar. © 2020 Universidade Federal de Sao Carlos. All rights reserved.
WOS研究方向	Materials Science
语种	英语
出版者	Universidade Federal de Sao Carlos
WOS记录号	WOS:000528837800001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/151209]
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
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Department of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Huanghuai University, Zhumadian, Henan; 463000, China; 3.Center for High Performance Computing, Network Information Center, Xi'an Jiaotong University, Xi'an; 710049, China
推荐引用方式 GB/T 7714	Ren, Junqiang,Liu, Xitong,Lei, Qingfeng,et al. Deformation behavior of pure titanium with a rare HCP/FCC Boundary: An atomistic study[J]. Materials Research,2020,23(1).
APA	Ren, Junqiang.,Liu, Xitong.,Lei, Qingfeng.,Wang, Qi.,Zhang, Xiaobo.,...&Ding, Yutian.(2020).Deformation behavior of pure titanium with a rare HCP/FCC Boundary: An atomistic study.Materials Research,23(1).
MLA	Ren, Junqiang,et al."Deformation behavior of pure titanium with a rare HCP/FCC Boundary: An atomistic study".Materials Research 23.1(2020).