The Influence of Co Addition on Phase Transformation Behavior and Mechanical Properties of TiNi Alloys  

作　　者：JING Rui-rui LIU Fu-shun 

机构地区：[1]School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

出　　处：《Chinese Journal of Aeronautics》2007年第2期153-156,共4页中国航空学报（英文版）

基　　金：National Defence Pre-research Foundation

摘　　要：The influences of Co-addition on phase transformation behavior and mechanical properties of TiN/alloys were investigated. Resuits indicate that, as a substitute for Ni, Co added to TiNi alloys can dramatically decrease the martensite transformation temperature, and R phase transformation and martensite transformation are accordingly separated. When Co-content reach 10 at.%, the martensite transformation temperature is lower than that of liquid nitrogen. During deformation at room temperature, Ti50Ni48Co2 alloy exhibits good ductility with a lower stress plateau caused by stress-induced martensite and martensite reorientation.The influences of Co-addition on phase transformation behavior and mechanical properties of TiN/alloys were investigated. Resuits indicate that, as a substitute for Ni, Co added to TiNi alloys can dramatically decrease the martensite transformation temperature, and R phase transformation and martensite transformation are accordingly separated. When Co-content reach 10 at.%, the martensite transformation temperature is lower than that of liquid nitrogen. During deformation at room temperature, Ti50Ni48Co2 alloy exhibits good ductility with a lower stress plateau caused by stress-induced martensite and martensite reorientation.

关 键 词：TiNiCo shape memory alloy martensite transformation mechanical property 

分 类 号：V25[一般工业技术—材料科学与工程]