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

Author(s)
Semir Tulic, Michael Kerber, Mitsuhiro Matsuda, Thomas Waitz
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.

Organisation(s)
Physics of Nanostructured Materials
External organisation(s)
Kumamoto University
Journal
Functional Materials Letters
Volume
10
No. of pages
8
ISSN
1793-6047
DOI
https://doi.org/10.1142/S1793604717400124
Publication date
02-2017
Peer reviewed
Yes
Austrian Fields of Science 2012
103018 Materials physics
Keywords
Portal url
https://ucris.univie.ac.at/portal/en/publications/phase-transformations-of-severely-plastically-deformed-tinipd-hightemperature-shape-memory-alloys(79041c3d-8342-403e-a188-04eebe2425fe).html