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Phase transformations of severely plastically deformed Ti-Ni-Pd high-temperature shape memory alloys

Authors/others:Tulic, SemirKerber, MichaelMatsuda, Mitsuhiro (Kumamoto University) Waitz, Thomas
Abstract:Severe plastic deformation of a Ti50Ni25Pd25 high-temperature shape memory alloy yields a nanoscale mixture of an amorphous phase and retained lamellae of the parent B19 martensite. The thermal stability of the deformed martensite is significantly enhanced. Upon heating, B2 austenite occurs within the martensite and by crystallization of the amorphous phase, concomitant with recovery and the formation of an ultrafine grained structure. In the small grains, the B2 austenite to B19 martensitic transformation is shifted to lower temperatures and incomplete.
Number of pages:8
Date of publication:2.2017
Journal title:Functional Materials Letters
Digital Object Identifier (DOI):http://dx.doi.org/10.1142/S1793604717400124
Publication Type:Article
Research Group Physics of Nanostructured Materials
Faculty of Physics

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