Propagation of macroscopic phase boundaries under impact loading

被引：18

作者：

Dai, XY ^{[1
]}

Tang, ZP ^{[1
]}

Xu, SL ^{[1
]}

Guo, YB ^{[1
]}

Wang, WQ ^{[1
]}

机构：

[1] Univ Sci & Technol, Dept Modern Mech, Key Lab Mech Behav & Design Mat, Hefei 230027, Anhui, Peoples R China

来源：

INTERNATIONAL JOURNAL OF IMPACT ENGINEERING | 2004年 / 30卷 / 04期

基金：

中国国家自然科学基金;

关键词：

phase boundary propagation; shape memory effect; pseudo-elastic effect; dynamic loading;

D O I：

10.1016/S0734-743X(03)00090-3

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The phenomena and rules for one-dimensional propagation of macroscopic phase boundary in shape memory alloys (SMA) under dynamic loading were investigated analytically and numerically with a simple mixture model of phase transformation proposed earlier. The interaction between stress waves and phase boundaries (and/or phase transition waves) yielded the complex wave patterns in x-t diagram. The phase boundary responses both for shape memory effect (SME) and pseudo-elastic effect (PE) of SMA were investigated. For SME, it was found to be very interesting that functionally graded material (FGM) might form during the unloading process. For PE, it was found that there existed three basic types of discontinuous interfaces. The interactions among the steady interfaces, the stress waves and the moving phase boundaries might cause some novel phenomena regarding unloading phase boundaries, such as bifurcation and acceleration of the unloading phase boundaries. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：385 / 401

页数：17

共 15 条

[1] On the kinetics of an austenite->martensite phase transformation induced by impact in a Cu-Al-Ni shape-memory alloy [J].