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Reversible grain size changes in ball-milled nanocrystalline Fe–Cu alloys

Published online by Cambridge University Press:  31 January 2011

J. Eckert
Affiliation:
W. M. Keck Laboratory of Engineering Materials 138–78, California Institute of Technology, Pasadena, California 91125
J.C. Holzer
Affiliation:
W. M. Keck Laboratory of Engineering Materials 138–78, California Institute of Technology, Pasadena, California 91125
C.E. Krill III
Affiliation:
W. M. Keck Laboratory of Engineering Materials 138–78, California Institute of Technology, Pasadena, California 91125
W.L. Johnson
Affiliation:
W. M. Keck Laboratory of Engineering Materials 138–78, California Institute of Technology, Pasadena, California 91125
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Abstract

Nanocrystalline FexCu100−x solid solutions (x < 60) with single-phase fcc structure have been prepared by mechanical alloying. The average grain size of the powders (8–20 nm) depends on the composition of the material. Varying the composition changes the grain size reversibly. This can be explained by the underlying mechanism of plastic deformation and solution hardening during mechanical alloying coupled with the recovery behavior of the material.

Type
Rapid Communications
Copyright
Copyright © Materials Research Society 1992

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