Effects of quenched-in vacancies on the reverse martensitic phase transformation temperature of the Cu-11.9Al-2.5Mn(wt%) shape memory alloy studied by internal friction

被引:5
作者
Wang Qing-Zhou [1 ]
Lu Dong-Mei [1 ]
Cui Chun-Xiang [1 ]
Han Fu-Sheng [2 ]
机构
[1] Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin 300130, Peoples R China
[2] Chinese Acad Sci, Inst Solid State Phys, Hefei 230031, Peoples R China
关键词
shape memory alloys; heat treatment; martensitic phase transformation; damping;
D O I
10.7498/aps.57.7083
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
By internal friction technique,the behaviors of quenched-in vacancies and their influence on the reverse martensitic phase transformation (MT) temperature of the Cu-11.9Al-2.5Mn (wt%) shape memory alloy have been studied. Investigations on the specimens subjected to various cooling regimes indicate that rapid cooling rate leads to relatively high reverse NIT temperature. For the water-quenched specimens, the reverse MT temperature bears a non-monotonic relationship to quenching temperature. This phenomenon may be related to the different formation energies of vacancies in ordered and disordered phases.
引用
收藏
页码:7083 / 7087
页数:5
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