Superelasticity and its stability of an ultrafine-grained Ti49.2Ni50.8 shape memory alloy processed by equal channel angular pressing

作者：Tong, Y. X.^*; Chen, F.; Guo, B.; Tian, B.; Li, L.; Zheng, Y. F.; Gunderov, Dmitry V.; Valiev, Ruslan Z.

来源：Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 2013, 587: 61-64.

DOI：10.1016/j.msea.2013.08.049

• Shape memory alloys
• Equal channel angular processing
• Martensitic transformations
• Precipitation

Superelasticity and cycling stability of an ECAP-processed Ti49.2Ni50.8 alloy were investigated as a function of annealing temperature. After annealing at 400 degrees C for 30 min, Ti3Ni4 precipitates formed to strengthen the matrix and yet the grain size kept constant. Such an annealing favors to optimize the superelasticity.

• 出版日期2013-12-10
• 单位北京大学; 哈尔滨工程大学