航空学报 > 1994, Vol. 15 Issue (12): 1528-1531

γ相的变形行为及其对Ni-Al-Fe-B合金形状记忆效应的影响

谢超英, 江伯鸿, 胡赓祥   

  1. 上海交通大学520教研室, 上海, 200030
  • 收稿日期:1993-03-29 修回日期:1993-11-22 出版日期:1994-12-25 发布日期:1994-12-25

DEFORMATION OF THE γ-PHASE AND ITS EFFECT ON THE SHAPE MEMORY EFFECT OF A Ni-Al-Fe-B ALLOR

Xie Chaoyhg, Jiang Bohong, Hu Gengxiang   

  1. Faculty 520 of shanghai Jiao Tong University, Shanghai, 200030
  • Received:1993-03-29 Revised:1993-11-22 Online:1994-12-25 Published:1994-12-25

摘要: 通过显微组织分析和宏观力学,研究了Ni-Al-Fe-B合金中γ相的变形行为及其对合金形状记忆效应(SME)的影响。结果表明:在低应力作用下,Ni-Al-Fe-B合金发生应力诱发马氏体相变时,有少量γ相以滑移方式参与协调变形,以至合金在较小的应变量下也得不到完全的SME。合金的形状记忆恢复率随应变量增加呈现阶段性衰减趋势。当应变量为4%时,形状记忆恢复率可达75%。

关键词: 相, 变形, 记忆, 合金, 效应

Abstract: The deformation of the γ-phase and its effect on the shape memory effect of a Ni-Al-Fe-B alloy were studied by means of optical and SEM metallographic exanllnations,microhardness measurement and compression test.It was found that a few γ-phases deformed coordinatedly in a slip manner when the stress induced martensitic transfonnation took plaee in the matrix at a low stress.The shape recovery ratio decreased by stages,with the increase of the strain.When the strain was 4%,the shape recovery ratio retained 75%.

Key words: phases, deformation, memory, alloys, effects

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