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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.
发表期刊MECHANICS OF MATERIALS
2017-11-01
卷号114页码:69-75
ISSN0167-6636
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
DOI10.1016/j.mechmat.2017.06.009
收录类别SCI ; EI
语种英语
WOS记录号WOS:000417009200006
关键词[WOS]PLASTICITY ; MODEL
WOS研究方向Materials Science ; Mechanics
WOS类目Materials Science, Multidisciplinary ; Mechanics
项目资助者National Natural Science Foundation of China [11002150, 11332011, 11402277]
论文分区二类
力学所作者排名2
引用统计
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/72128
专题流固耦合系统力学重点实验室
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.
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.
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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