The Stress Relaxation Characteristic and Martensitic Transformation of Fe-Mn-Si Shape Memory Alloys under Different Deformation Condition

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Abstract:

The stress relaxation characteristic and martensitic transformation in Fe-Mn-Si shape memory alloys under different deformation condition are studied by X-Ray Diffraction (XRD) analysis and TEM observation. The results show that the amount of stress induced ε martensitic quickly increases when the suspending loading time below 10min (0~10min), and the increasing speed of ε martensitic gradually become slower when the suspending loading time above 10min. This is owing to the stabilization of stress induced ε martensitic. The stress relaxation ratio of Fe-17Mn-5Si-10Cr-5Ni and Fe-17Mn-5Si-2Cr-2Ni-1V alloys increase with increasing the suspending loading time, and the relaxation ratio of Fe-17Mn-5Si-2Cr-2Ni-1V alloy is obviously lower than that of Fe-17Mn-5Si-10Cr-5Ni alloy.

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Periodical:

Advanced Materials Research (Volumes 430-432)

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106-109

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Online since:

January 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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