摘要
利用DSC分析了热流-温度曲线和马氏体体积分数与自由能增量间的微分关系,建立了一个新的余弦型形状记忆合金马氏体相变模型;推导了一个新的形状记忆合金本构方程.研究表明:Liang和Rogers的马氏体相变模型和本构方程分别为本文建立的马氏体相变模型和本构方程所描述的一种特殊情况;本文建立的马氏体相变模型和本构方程比Liang和Rogers及其它现存马氏体相变模型和本构方程能更准确地描述形状记忆合金的相变行为和力学行为.
According to heat flow-temperature curves of DSC and the differential relationship between free energy increment and martensite volume fraction, a new cosine martensitic transformation model and the corresponding constitutive equation of shape memory alloy were developed. It was illustrated that the martensitic transformation model and constitutive equation proposed by Liang and Rogers are the special cases of the new martensitic transformation model and constitutive equation respectively. The new model and equation can describe the phase transformation behavior and mechanical behavior of shape memory alloy more precisely than those previous models and equations.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
2007年第11期1211-1216,共6页
Acta Metallurgica Sinica
基金
教育部博士点基金项目20060217010
哈尔滨工程大学基础研究基金项目002020260707资助~~
关键词
形状记忆合金
DSC
马氏体相变模型
本构方程
shape memory alloy, DSC, Martensitic transformation model, constitutive equation
