Title
High-resolution electron-microscopy and electron-diffraction study of the displacive transformation of the ni2al phase in a ni-65 al-35 alloy and associated with the martensitic-transformation High-resolution electron-microscopy and electron-diffraction study of the displacive transformation of the ni2al phase in a ni-65 al-35 alloy and associated with the martensitic-transformation
Author
Publication type
article
Publication
New York ,
Subject
Physics
Engineering sciences. Technology
Source (journal)
Acta metallurgica et materialia. - New York
Volume/pages
41() :8 , p. 2377-2383
ISSN
0956-7151
ISI
A1993LN82900011
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Abstract
The Ni-rich Ni-Al beta2 phase (CsCl structure) exhibits the precipitation of a metastable Ni2Al phase, which is closely related to an underlying lattice instability of the [111] phonon branch in the beta2 phase. The Ni2Al precipitates undergo both the Bain distortion and twinning together with the martensitic transformation of the beta2 matrix. The resulting structure of the Ni2Al precipitates in the martensite is presented and discussed.
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