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Phase Stability in the Al(6−x)CuxZr2 System for 0 < × < 1.

Published online by Cambridge University Press:  28 February 2011

P. B. Desch ,
R. B. Schwarz  and
P. Nash
P. B. Desch
Affiliation:
Center for Materials Science, Mail Stop K-765, Los Alamos National Laboratory, Los Alamos, NM 87545
R. B. Schwarz
Affiliation:
Center for Materials Science, Mail Stop K-765, Los Alamos National Laboratory, Los Alamos, NM 87545
P. Nash
Affiliation:
Metallurgical and Materials Engineering Department, Illinois Institute of Technology, Chicago, IL 60616
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Abstract

We have determined the structures and thermal stability of AI(6-x) CuxZr2 (0≤ × ≤ 1) powders prepared by mechanically alloying elemental powder mixtures. In the as mechanically alloyed condition the structure is L12 for all ×. After heating to 750°C the alloy is single phase D023 for 0 < × < 0.2, is a two-phase mixture of D023 and L12 for 0.2 < × < 0.6, and remains in the Ll2 phase for 0.6 < × < 1. Al5CuZr2 is stable in the Ll2 structure up to 1300°C. The lattice parameter of the annealed L12 phase is Independent of ×.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 186: Symposium I – Alloy Phase Stability and Design , 1990 , 439
Copyright
Copyright © Materials Research Society 1991

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