Transformation behavior and shape memory characteristics of Ti-40Ni-10Cu (at.％) alloy ribbons
Ti-40Ni-10Cu (at.％) alloy ribbons have been fabricated by melt spinning with a linear velocity of 31ms-1. Their microstructures, transformation behavior, shape memory characteristics and superelasticity were investigated. As-spun ribbons prepared at the melt spinning temperature of 1873K were amorphous and crystalline mixtures, below which they were crystal. The B2-B19-B19 transformation occurred in the ribbons and the maximum temperature gap between Ms (B2-B19 transformation start temperature) and Ms (B19-B19 transformation start temperature) was 46K. Ti-40Ni-10Cu alloy ribbons showed perfect shape memory effects even at 160MPa and perfect superelasticity over a temperature range of 13K. The transformation hysteresis of Ti-40Ni-10Cu alloy ribbons associated with the B2-B19 transformation was 8K. Rapid solidification was found to be effective in increasing the critical stress for slip of a Ti-40Ni-10Cu alloy without overlapping the B2-B19 and B19-B19 transformations.
J M Nam G B Cho H J Ahn Y W Kim T H Nam
Division of Advanced Materials Engineering, i-cube and ERI, Gyeongsang National University, 900 Gajw Department of Material Engineering, Keimyung University, 1000 Shindang-dong, Dalseo-gu, Taegu 704-71
国际会议
第二届功能原料国际研讨会(The 2rd International Symposium on Functional Materials)
杭州
英文
255-260
2007-05-16（万方平台首次上网日期，不代表论文的发表时间）