Thermodynamic Analysis on Relation Between T_0 and σ_M in a Ti_(44)Ni_(47)Nb_9 Shape Memory Alloy

作     者：WeiJIN ShaoyuQIU 等 

作者机构：InstituteofMetalResearchChineseAcademyofSciencesShenyang110016China StateKeyLaboratoryofNuclearFlueandMaterialsNuclearPowerInstituteofChinaChengdu610041China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2002年第18卷第6期

页      面：538-540页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：The authors are grateful to the State Key Laboratory of Nuclear Flue and Materials Foundation for support 

主　　题：Ti44Ni47Nb9 shape memory alloy Transformation Thermodynamics 

摘      要：The effect of heat treatment on martensitic transformation behavior has been investigated in Ti44Ni47Nb9 alloy. The relation between transformation temperatures and critical stress of stress induced martensitic transformation is interpreted in terms of thermodynamic theory. It is shown that the decrease in transformation temperature in specimens of slow cooling rate or low temperature aging after solution heat treatment results from the changes of Ni/Ti ratio in the matrix. The increase of critical stress of stress induced martensitic transformation is a consequence of the decrease of transformation temperatures.