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.
Source PublicationPHILOSOPHICAL MAGAZINE
2015-08-13
Volume95Issue:23Pages:2491-2512
ISSN1478-6435
AbstractMolecular 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.
KeywordReverse Phase Transformation Phase Transformation Behaviour Of Niti Molecular Dynamics Temperature Effect Strain Rate Effect
DOI10.1080/14786435.2015.1065018
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000360303500002
WOS KeywordMARTENSITIC TRANSFORMATIONS ; MOLECULAR-DYNAMICS ; TI ALLOY ; DEFORMATION ; NANOPILLARS
WOS Research AreaMaterials Science ; Mechanics ; Metallurgy & Metallurgical Engineering ; Physics
WOS SubjectMaterials Science, Multidisciplinary ; Mechanics ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter
Funding OrganizationThis work was supported by National Natural Science Foundation of China [grant number 11332011], [grant number 11402277].
DepartmentLMFS冲击与耦合效应(LHO)
Classification一类
RankingTrue
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/55777
Collection流固耦合系统力学重点实验室
Corresponding AuthorWu, XQ (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China.
Affiliation1.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
Recommended Citation
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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