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Transformation to Ni5Al3 in a 63.0 at. pct Ni-Al alloyMicrostructures of 63 at. pct P/M Ni-Al alloys with a composition close to the stoichiometry of the Ni5Al3 phase were investigated using homogenized and quenched specimens aged at low temperatures for various times. Results of analyses of XRD data and electron microscopy observations were used for quantitative phase analysis, performed to calculate the (NiAl + Ni5Al3)/Ni5Al3 phase boundary locations. The measured lattice parameters of Ni5Al3 phase formed at 823, 873, and 923 K indicated an increase in tetragonality of the phase with increasing nickel content.
Document ID
19930041111
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Khadkikar, P. S.
(Therm-O-Disc, Inc. Mansfield, OH, United States)
Locci, I. E.
(Case Western Reserve Univ.; NASA, Lewis Research Center Cleveland, OH, United States)
Vedula, K.
(Iowa State Univ. of Science and Technology, Ames, United States)
Michal, G. M.
(Case Western Reserve Univ. Cleveland, OH, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1993
Publication Information
Publication: Metallurgical Transactions A - Physical Metallurgy and Materials Science
Volume: 24A
Issue: 1
ISSN: 0360-2133
Subject Category
Metallic Materials
Accession Number
93A25108
Distribution Limits
Public
Copyright
Other

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