Transformation behavior of a Ti-47Ni-3Cu alloy heat treated under temperature gradient
(0) Transformation behavior and shape memory characteristics of temperature gradient anneal (TGA) treated and thermo-mechanically treated (TMT) Ti-47Ni-3Cu (at.％) alloys were investigated by means of differential scanning calorimetry and thermal cycling tests under constant load. Both TGA treated and TMT Ti-47Ni-3Cu alloys showed B2-B19 transformation behavior. The change in M*s by 23K was developed in the TGA treated Ti-47Ni-3Cu alloy along the length of the sample (150mm). TGA treated Ti-47Ni-3Cu alloy showed perfect shape memory effects. The temperature dependence of elongation (dε/dT) of a TGA treated specimen was in the range of 0.02-0.09％K-1 depending on the amount of applied stress, which was small compared to that of a TMT spec0069men (0.01-0.18％K-1). The temperature dependence of elongation (dε/dT) of the TGA treated specimen on cooling is almost the same as that on heating, while dε/dT of the TMT specimen on cooling is much smaller than that on heating (0.68％K-1).
Hyun-Gon Kim Han-Seong Kim Eunsoo Choi Baik-Soon Cho Young-Soo Chung Tae-Hyun Nam
Division of Advanced Materials Engineering, ERI and i-cube center, Gyeongsang National University, 9 Department of Civil Engineering, Hongik University, Korea Department of Civil Engineering, Inje University, Korea Department of Civil Engineering, Chung-Ang University, Korea
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
236-239
2007-05-16（万方平台首次上网日期，不代表论文的发表时间）