| In-situ investigation of dynamic deformation in NiTi shape memory alloys under laser induced shock |
| Wang X(王曦); Xia WG(夏伟光) ; Wu XQ(吴先前); Wei YP(魏延鹏); Huang CG(黄晨光); Wang, X (reprint author), Beijing Jiaotong Univ, Sch Mech Elect & Control Engn, Beijing 100044, Peoples R China.
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| 发表期刊 | MECHANICS OF MATERIALS
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| 2017-11-01
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| 卷号 | 114页码:69-75 |
| ISSN | 0167-6636
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| 摘要 | The free surface particle velocity of NiTi target shocked with a pulsed laser beam was measured with a photonic Doppler velocimetry (PDV) system to study the dynamic deformation behavior of NiTi alloys at ultra-high strain rate of 10(6)similar to 10(7)/s. Through the analysis of the particle velocity profiles, the shock wave intensity was found to have the influence on the process of austenite-martensite transformation. Theoretical analysis of shock wave propagation showed that the first plateau in the velocity profile was caused by martensitic transformation and the second plateau if existing is caused by the subsequent plastic yielding of shock induced martensite. Residual martensite of the NiTi, which exhibited as needlelike structures, was observed in the laser shocked region. Based on the present results, and the studies by Nemat-Nasser et al. (2005), Liao et al. (2012), and Wang et al. (2013), we concluded that laser induced shock can cause the martensitic transformation as long as the laser induced shock pressure reaches a critical value. The dynamic transition stress and the dynamic tensile strength of NiTi alloys were also determined from the experimentally measured surface velocity profile. (C) 2017 Elsevier Ltd. All rights reserved. |
| 关键词 | Shape Memory Alloy
Laser Induced Shock
Martensitic Transformation
Strain Rate
Photonic Doppler Velocimetry
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| DOI | 10.1016/j.mechmat.2017.06.009
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| 收录类别 | SCI
; EI
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| 语种 | 英语
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| WOS记录号 | WOS:000417009200006
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| 关键词[WOS] | PLASTICITY
; MODEL
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| WOS研究方向 | Materials Science
; Mechanics
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| WOS类目 | Materials Science, Multidisciplinary
; Mechanics
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| 项目资助者 | National Natural Science Foundation of China [11002150, 11332011, 11402277]
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| 论文分区 | 二类
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| 力学所作者排名 | 2
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/72128
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| 专题 | 流固耦合系统力学重点实验室
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| 通讯作者 | Wang, X (reprint author), Beijing Jiaotong Univ, Sch Mech Elect & Control Engn, Beijing 100044, Peoples R China. |
推荐引用方式
GB/T 7714 |
Wang X,Xia WG,Wu XQ,et al. In-situ investigation of dynamic deformation in NiTi shape memory alloys under laser induced shock[J]. MECHANICS OF MATERIALS,2017,114:69-75.
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| APA |
王曦,夏伟光,吴先前,魏延鹏,黄晨光,&Wang, X .(2017).In-situ investigation of dynamic deformation in NiTi shape memory alloys under laser induced shock.MECHANICS OF MATERIALS,114,69-75.
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| MLA |
王曦,et al."In-situ investigation of dynamic deformation in NiTi shape memory alloys under laser induced shock".MECHANICS OF MATERIALS 114(2017):69-75.
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