Title: Nano- and microcrystal investigations of precipitates, interfaces and strain fields in Ni-Ti-Nb by various TEM techniques
Authors: Schryvers, Dominique
Shi, Hui
Martinez, Gerardo T.
Van Aert, Sandra
Frenzel, Jan
Van Humbeeck, Jan
Issue Date: 2013
Publisher: Trans Tech Publications
Host Document: Materials Science Forum vol:738-739 pages:65-71
Conference: 9th European Symposium on Martensitic Transformations (ESOMAT 2012) location:St Petersburg, Russia date:9 -16 september 2012
Abstract: In the present contribution several advanced electron microscopy techniques are employed in order to describe chemical and structural features of the nano- and microstructure of a Ni45.5Ti45.5Nb9 alloy. A line-up of Nb-rich nano-precipitates is found in the Ni-Ti-rich austenite of as-cast material. Concentration changes of the matrix after annealing are correlated with changes in the transformation temperatures. The formation of rows and plates of larger Nb-rich precipitates and particles is described. The interaction of a twinned martensite plate with a Nb-rich nano-precipitate is discussed and the substitution of Nb atoms on the Ti-sublattice in the matrix is confirmed.
ISSN: 0255-5476
Publication status: published
KU Leuven publication type: IC
Appears in Collections:Surface and Interface Engineered Materials

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