The B2-B19-B19′ transformation behaviour in Ti-(45-x)Ni-5Cu-xV alloys

被引：6
|
作者：
Choi, J. Y. [1 ]
Choi, E. S. [2 ]
Cho, B. S. [3 ]
Chung, Y. S. [4 ]
Nam, T. H. [1 ]
机构：
[1] Gyeongsang Natl Univ, Div Adv Mat Engn, Jinju 660701, Gyeongnam, South Korea
[2] Hongik Univ, Dept Civil Engn, Hongik, South Korea
[3] Inje Univ, Dept Civil Engn, Seoul, South Korea
[4] Chung Ang Univ, Dept Civil Engn, Seoul, South Korea
来源：
PHYSICA SCRIPTA | 2007年 / T129卷
关键词：
D O I：
10.1088/0031-8949/2007/T129/054
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Transformation behaviour, shape memory characteristics and superelasticity of Ti-(45-x)Ni-5Cu-xV(at.%) (x = 0.5-2.0) alloys were investigated using different techniques. The B2-B19' transformation occurs when V content is less than 1.0 at.%, above which the B2-B19-B19' transformation occurs. The temperature gap between M-s' (the B2-B19 transformation start temperature) and M-s (the B19-B19' transformation start temperature) increased from 8 to 22K with increasing V content from 1.0 to 2.0 at.%. V content dependence of M-s' (the B2-B19 transformation start temperature) was 20Kat.%(-1). One-stage elongation occurred in Ti-44.5Ni-5.0Cu-0.5V and Ti-44.0Ni-5.0Cu-1.0V alloys, while two-stage elongation occurred in Ti-43.5Ni-5.0Cu-1.5V and Ti-43.0Ni-5.0Cu-2.0V alloys. Transformation hysteresis decreased from 16 to 12K with increasing V content from 0.5 to 2.0%. The superelastic recovery ratio increased from 65.0 to 86.1% with increasing V content from 0.5 to 2.0%.
引用
收藏
页码：240 / 244
页数：5
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