Atomistic study of temperature and strain rate-dependent phase transformation behaviour of NiTi shape memory alloy under uniaxial compression
文献类型：期刊论文
| 作者 | Yin QY; Wu XQ(吴先前); Huang CG(黄晨光); Wang X(王曦); Wei YP(魏延鹏); Wang X(王曦); Wei YP(魏延鹏) ; Wu XQ(吴先前); Huang CG(黄晨光); Wang X(王曦)
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| 刊名 | Philosophical Magazine
 |
| 出版日期 | 2015-08-13 |
| 卷号 | 95期号:23页码:2491-2512 |
| 通讯作者邮箱 | wuxianqian@imech.ac.cn |
| 关键词 | reverse phase transformation phase transformation behaviour of NiTi molecular dynamics temperature effect strain rate effect |
| ISSN号 | 1478-6435 |
| 产权排序 | [Yin, Qiuyun; Wu, Xianqian; Huang, Chenguang; Wei, Yanpeng] Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China; [Wang, Xi] Beijing Jiaotong Univ, Sch Mech Elect & Control Engn, Beijing 100044, Peoples R China |
| 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. |
| 中文摘要 | 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. |
| 英文摘要 | 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. |
| 分类号 | 一类 |
| 类目[WOS] | Materials Science, Multidisciplinary ; Mechanics ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter |
| 研究领域[WOS] | Materials Science ; Mechanics ; Metallurgy & Metallurgical Engineering ; Physics |
| 关键词[WOS] | MARTENSITIC TRANSFORMATIONS ; MOLECULAR-DYNAMICS ; TI ALLOY ; DEFORMATION ; NANOPILLARS |
| 收录类别 | SCI |
| 原文出处 | http://dx.doi.org/10.1080/14786435.2015.1065018 |
| 语种 | 英语 |
| WOS记录号 | WOS:000360303500002 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/55777]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 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.,吴先前.,黄晨光.,王曦.,魏延鹏.,...&Wang X.(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. |
入库方式： OAI收割
来源：力学研究所
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