Scaling Law in Laser-Induced Shock Effects of NiTi Shape Memory Alloy

被引：4

作者：

Wang, Xi ^{[1
]}

Xia, Weiguang ^{[2
]}

Wu, Xianqian ^{[3
]}

Huang, Chenguang ^{[3
]}

机构：

[1] Beijing Jiaotong Univ, Sch Mech Elect & Control Engn, Beijing 100044, Peoples R China

[2] China Elect Technol Corp, Res Inst 38, Hefei 230088, Anhui, Peoples R China

[3] Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China

来源：

METALS | 2018年 / 8卷 / 03期

基金：

中国国家自然科学基金;

关键词：

shape memory alloy; laser shock peening; dimensionless parameters; residual stress; plastically affected depth; PLASTIC-DEFORMATION; MECHANICAL RESPONSE; RESIDUAL-STRESS; SIMULATION; MICROSTRUCTURE;

D O I：

10.3390/met8030174

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The shock effects in laser shock processing of NiTi shape memory alloy were studied by dimensional analysis and finite element simulation. The essential dimensionless parameters controlling the residual stress distribution and plastically affected depth were found to be dimensionless pressure duration and peak pressure. By adopting the constitutive model considering the martensitic transformation and plasticity of deformation induced martensite, the influence of dimensionless parameters on the shock effects of shape memory alloy was studied numerically. The numerical results reveal the scaling law of shock effects on those dimensionless parameters quantitatively and the relationship between the plastically affected depth and peak pressure was validated with experimental results. A window of the optimal processing parameters could be obtained based on this study.

引用

页数：15

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