外应力对热弹性马氏体相变的影响  

The Influence of the External Applied Stress on the Thermoelastic Martensitic Tansformation

作　　者：陈飞明[1] 黄金亮[2] 王军[3] 杨会霞 

机构地区：[1]洛阳工学院基础部,河南洛阳471039 [2]洛阳工学院材料工程系,河南洛阳471039 [3]郑州大学物理系,河南郑州450052 [4]一拖洛阳汽车有限公司,河南洛阳471004

出　　处：《洛阳工学院学报》2000年第3期5-8,共4页Journal of Luoyang Institute of Technology

基　　金：河南省自然科学基金资助项目!(9740 42 80 0 )

摘　　要：应用朗道理论 ,通过引进两个序参量 ,即马氏体转变百分数Φ和平均应变ε,将自由能密度函数按Φ和ε展开 ,讨论了外应力对初始相变温度TC、马氏体转变百分数和马氏体转变性质的影响。研究了Φ和温度T之间的关系 。Introducing two order parameters, i. e.,the percent Φ of transformed martensite and the mean strain ε ,and spreading out a free energe density function according to Φ and ε ,this paper is mainly to discuss the influence of external applied stress σ on the initial phase transition temperature T C , the amount of the transformed martensite and the nature of the martensitic transformation by making use of Landaus phenomenological theory. The relations between Φ and temperature T has been investigated. The obtained conclusion can directly be compared with experimental results.

关 键 词：相变 热弹性马氏体 无扩散相变 合金 外应力 

分 类 号：TG111.5[金属学及工艺—物理冶金] TG131[金属学及工艺—金属学]