Title
Electron microscopy study of Nb-rich nanoprecipitates in NiTiNb and their influence on the martensitic transformation Electron microscopy study of Nb-rich nanoprecipitates in NiTiNb and their influence on the martensitic transformation
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Oxford ,
Subject
Physics
Engineering sciences. Technology
Source (journal)
Scripta materialia. - Oxford
Volume/pages
67(2012) :12 , p. 939-942
ISSN
1359-6462
ISI
000311135000005
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Nb-rich nanoprecipitates in the matrix of an annealed commercial NiTiNb alloy are investigated by scanning and transmission electron microscopy, including slice-and-view and chemical analysis. The precipitates have a diameter of around 100 nm, are faceted and have a cube-on-cube relation with the B2 matrix. In situ TEM cooling shows that the martensitic transformation is hampered by the presence of these precipitates. The latter could explain the increase in hysteresis when compared with the binary system.
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