Shape memory effect in nanocrystalline NiTi alloy processed by high-pressure torsion

A NiTi alloy was processed by high-pressure torsion for 10 turns followed by post-deformation annealing at 673K for various times. An anneal for 60min gave a nanocrystalline microstructure with a superior shape memory effect and an improvement of more than 40% over the initial state.

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Bibliographic Details
Published in:	Materials science & engineering. A, Structural materials : properties, microstructure and processing Vol. 626; pp. 203 - 206
Main Authors:	Shahmir, Hamed, Nili-Ahmadabadi, Mahmoud, Huang, Yi, Myun Jung, Jai, Seop Kim, Hyoung, Langdon, Terence G.
Format:	Journal Article
Language:	English
Published:	Elsevier B.V 01-02-2015
Subjects:	Crystallization Intermetallics Microstructure Nanocrystals Nanostructured materials Nickel base alloys Nickel compounds Nickel titanides NiTi alloy Severe plastic deformation Shape memory alloys Shape memory effect Titanium compounds Torsion Severe plastic deformation NiTi alloy Nanostructured materials Shape memory effect Crystallization
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Summary:	A NiTi alloy was processed by high-pressure torsion for 10 turns followed by post-deformation annealing at 673K for various times. An anneal for 60min gave a nanocrystalline microstructure with a superior shape memory effect and an improvement of more than 40% over the initial state.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0921-5093 1873-4936
DOI:	10.1016/j.msea.2014.12.056