Modeling the Hot Deformation Behavior of Ti-50.8%Ni Shape Memory Alloy

摘要：

　　The characteristics of isothermal deformation behavior of Ti-50.8%Ni shape memory alloys were investigated by thermal simulation tests, which were performed on Gleeble-3500 thermal simulation machine.The range of deformation temperatures was 800℃ to 1050℃ and that of strain rates was 0.01s-1 to 10s-1.The stress-true strain curves were corrected by considering deformation-heating and friction.The results show that the flow stress increases with the decrease of deformation temperatures or the increase of strain rates.The constitutive relationship of hot deformation was established on the basis of the Arrhenius equation and the average activation energy of 182 KJ/mol was obtained.

关键词： Shape memory alloy Hot deformation Deformation-heating correction Friction correction Constitutive relationship

作者: Xiang-qian Yin Li-jun Peng Xue Feng Yan-feng Li Hao-feng Xie Xu-jun Mi Jong-taek Yeom

作者单位: State Key Laboratory of Nonferrous Metals & Processes,General Research Institute for Nonferrous Meta State Key Laboratory of Nonferrous Metals & Processes,General Research Institute for Nonferrous Meta Light metal division, Korea Institute of Materials Science (KIMS), Changwon, Korea

会议类型: 国际会议

会议名称: The 2016 China Functional Materials Technology and Industry Forum (2016中国国际功能材料大会暨第九届中国功能材料及其应用学术会议)

会议地点: 重庆

会议语种:英文

页码: 154-158

在线出版日期: 2016-07-25（万方平台首次上网日期，不代表论文的发表时间）