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Shape Memory Behavior of Ti-50.9at%Ni Alloy after ECAE Processes

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Abstract:

The initial coarse grains of Ti-50.9at%Ni were obviously refined after eight ECAE processes. Effects of pressing number on the transformation behavior have been investigated in detail. Comparing with the initial solution-treated Ti-50.9at%Ni, the R-phase transformation was stimulated and the martensitic temperature Ms decreased with ECAE processes at 773K. The shape memory properties of Ti-50.9at%Ni alloy before and after ECAE processes at 773K have been measured. Good one way shape memory and superelasticity were obtained for the submicron-grained Ti-50.9at%Ni alloy.

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Periodical:

Materials Science Forum (Volumes 561-565)

Pages:

2313-2316

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.561-565.2313

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Online since:

October 2007

Authors:

Zhi Guo Fan, Chao Ying Xie

Keywords:

ECAE Process, Phase Transformation, Shape Memory Effects (SME), Superelasticity, Ti-50.9at%Ni Alloy

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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