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Effect of Equal Channel Angular Pressing and Repeated Rolling on Structure, Phase Transformations and Properties of TiNi Shape Memory Alloys

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Abstract:

The nanostructured TiNi-based shape-memory alloys were synthesized by multi-step SPD deformations – ECAP plus cold rolling or drawing. It is found that the SPD processing changed the morphology of the martensite and temperature of martensite transformation. Also, we found that the mechanical and shape memory properties can be enhanced by forming nanostructures in these alloys. SPD processing renders higher strength, higher yield dislocation strength and in results - higher recovery stress and maximum reverse strain of shape memory.

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Periodical:

Materials Science Forum (Volumes 503-504)

Pages:

539-544

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.503-504.539

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Online since:

January 2006

Authors:

V.G. Pushin, Ruslan Valiev, Yuntian T. Zhu, Sergey Prokoshkin, Dmitriy Gunderov, L.I. Yurchenko

Keywords:

Martensitic Transformation (MT), Nanostructure, Severe Plastic Deformation (SPD), Shape Memory, TiNi-Based Alloys

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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