The Influence of Co Addition on Phase Transformation Behavior and Mechanical Properties of TiNi Alloys
The influences of Co-addition on phase transformation behavior and mechanical properties of TiNi alloys were investigated. Results 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.
作 者： JING Rui-rui LIU Fu-shun 作者单位： School of Materials Science and Engineering, Beijing University of Aeronautics andAstronautics, Beijing 100083, China 刊 名： 中国航空学报(英文版) ISTIC 英文刊名： CHINESE JOURNAL OF AERONAUTICS 年，卷(期)： 2007 20(2) 分类号： V2 关键词： TiNiCo shape memory alloy martensite transformation mechanical property