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Journal of Materials Engineering and Performance
Published in: Journal of Materials Engineering and Performance 7/2014

01-07-2014

Shape Memory Effects in TiNi-based Alloys Subjected to Electroplastic Rolling

Authors: A. A. Potapova, N. N. Resnina, V. V. Stolyarov

Published in: Journal of Materials Engineering and Performance | Issue 7/2014

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Abstract

One of the prospective methods for structure refinement is electroplastic rolling (EPR). The use of an electric current pulse during cold rolling enhances deformability (1.5-3 times for TiNi-based alloys). It was shown that EPR (e > 1) with post-deformation annealing at 450-500 °C leads to nanostructure formation with a grain size of 60-120 nm. Also, EPR leads to an increase in functional properties of TiNi-based alloys. So, the recovery coefficient was revealed as being better than the undeformed alloy (90-96% for Ti49,2Ni50,8 and 75-80% for Ti50,0Ni50,0). In the Ti50,0Ni50,0 subjected to EPR up to strain 3.6 and subsequent annealing at 450 °C for 1 h, the superelasticity effect is found.
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Literature
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Metadata
Title
Shape Memory Effects in TiNi-based Alloys Subjected to Electroplastic Rolling
Authors
A. A. Potapova
N. N. Resnina
V. V. Stolyarov
Publication date
01-07-2014
Publisher
Springer US
Published in
Journal of Materials Engineering and Performance / Issue 7/2014
Print ISSN: 1059-9495
Electronic ISSN: 1544-1024
DOI
https://doi.org/10.1007/s11665-014-1046-0

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