Effect of addition of V and C on strain recovery characteristics in Fe–Mn–Si alloy
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- 作者：Lin Chengxin ; Wang Guixin ; Wu Yandong ; Liu Qingsuo and Zhang Jianjun
- 关键词：Fe– ; Mn– ; Si shape memory alloy ; Strain recovery characteristics ; Martensitic transformation
- 刊名：Materials Science and Engineering: A
- 出版年：2006
- 出版时间：25 November 2006
- 年：2006
- 卷：438-440
- 期：Complete
- 页码：808-811
- 全文大小：464 K
文摘
Shape recoverable strain, recovery stress and low-temperature stress relaxation characteristics in an Fe–17Mn–5Si–10Cr–4Ni (0.08C) alloy and an Fe–17Mn–2Cr–5Si–2Ni–1V (0.23C) alloy have been studied by means of X-ray diffraction, transmission electron microscopy and measurement of recoverable strain and recovery stress. The amount of stress-induced martensite under tensile deformation at room temperature, recoverable strain and recovery stress are increased obviously with addition V and C in Fe–Mn–Si alloy, which is owing to the influence of addition V and C on strengthening austenitic matrix. Addition of V and C in Fe–Mn–Si alloy is evidently effective to reduce the degree of low-temperature stress relaxation, for the dispersed VC particles 50–180 nm in size precipitated during annealing restrain the stress induced martensitic transformation.