Atomistic study of temperature and strain rate-dependent phase transformation behaviour of NiTi shape memory alloy under uniaxial compression

doi:10.1080/14786435.2015.1065018

IMECH-IR > 流固耦合系统力学重点实验室

	Atomistic study of temperature and strain rate-dependent phase transformation behaviour of NiTi shape memory alloy under uniaxial compression
	Yin QY(殷秋运)1; Wu XQ(吴先前)1 ; Huang CG(黄晨光)1 ; Wang X(王曦)2; Wei YP(魏延鹏)1 ; Wu, XQ (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China.
发表期刊	PHILOSOPHICAL MAGAZINE
	2015-08-13
卷号	95 期号:23 页码:2491-2512
ISSN	1478-6435
摘要	Molecular dynamics simulation was conducted to investigate the phase transformation behaviour of nickel-titanium (NiTi, 50%-50% at.%) nanopillar under uniaxial compression at loading rates varying from 3.30x10(7) to 3.30x10(9)s(-1) and at temperatures varying from 325 to 600K. The phase transformation of NiTi was observed to be sensitive to loading rates and temperatures. The phase transformation stress of B2 -> B19 increased with increasing temperature while it was insensitive to loading rate. The phase transformation stress of B19 -> B19 '-> BCO increased with increasing strain rate and decreasing temperature. In addition, reverse phase transformation was observed during compression due to the interaction between the phase transformation of B19 -> B19 '-> BCO and the deformation twinning/dislocation slide-induced plasticity of the BCO phase, leading to different residual crystal structures after loading. Moreover, a diagram for the phase transformation behaviour of NiTi in the simulated ranges of strain rate and temperature was obtained, from which the contrary experimental observations on the phase transformation behaviour of NiTi from the studies of Nemat-Nasser et al. (Mech. Mater. 37 (2005) p.287) and Liao et al. (J. Appl. Phys. 112 (2012) p.033515) at various strain rates could be well explained.
关键词	Reverse Phase Transformation Phase Transformation Behaviour Of Niti Molecular Dynamics Temperature Effect Strain Rate Effect
DOI	10.1080/14786435.2015.1065018
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000360303500002
关键词[WOS]	MARTENSITIC TRANSFORMATIONS ; MOLECULAR-DYNAMICS ; TI ALLOY ; DEFORMATION ; NANOPILLARS
WOS研究方向	Materials Science ; Mechanics ; Metallurgy & Metallurgical Engineering ; Physics
WOS类目	Materials Science, Multidisciplinary ; Mechanics ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter
项目资助者	This work was supported by National Natural Science Foundation of China [grant number 11332011], [grant number 11402277].
课题组名称	LMFS冲击与耦合效应(LHO)
论文分区	一类
力学所作者排名	True
引用统计	被引频次：18[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/55777
专题	流固耦合系统力学重点实验室
通讯作者	Wu, XQ (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China.
作者单位	1.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China 2.Beijing Jiaotong Univ, Sch Mech Elect & Control Engn, Beijing 100044, Peoples R China
推荐引用方式 GB/T 7714	Yin QY,Wu XQ,Huang CG,et al. Atomistic study of temperature and strain rate-dependent phase transformation behaviour of NiTi shape memory alloy under uniaxial compression[J]. PHILOSOPHICAL MAGAZINE,2015,95,23,:2491-2512.
APA	Yin QY,Wu XQ,Huang CG,Wang X,Wei YP,&Wu, XQ .(2015).Atomistic study of temperature and strain rate-dependent phase transformation behaviour of NiTi shape memory alloy under uniaxial compression.PHILOSOPHICAL MAGAZINE,95(23),2491-2512.
MLA	Yin QY,et al."Atomistic study of temperature and strain rate-dependent phase transformation behaviour of NiTi shape memory alloy under uniaxial compression".PHILOSOPHICAL MAGAZINE 95.23(2015):2491-2512.

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