STRENGTHENING OF L1(2)-ORDERED INTERMETALLICS BY FINE PRECIPITATION OF COHERENT DISORDERED PHASES

Authors
NEMOTO M TAKESUE H HORITA Z
Citation
M. Nemoto et al., STRENGTHENING OF L1(2)-ORDERED INTERMETALLICS BY FINE PRECIPITATION OF COHERENT DISORDERED PHASES, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 234, 1997, pp. 327-330
Citations number
10
Categorie Soggetti
Material Science
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
234
Year of publication
1997
Pages
327 - 330
Database
ISI
SICI code
0921-5093(1997)234:<327:SOLIBF>2.0.ZU;2-U
Abstract
The minimum creep rates of polycrystalline L1(2)-ordered intermetallic s, Ni-3(AI, Ti) and Co3Ti, decrease appreciably by the fine precipitat ion of disordered coherent phases. Transmission electron microscope ob servations of the interaction between dislocations and precipitates re vealed that superdislocations produced by deformation tend to be stron gly attracted and dissociate as they meet the disordered coherent prec ipitates because the anti-phase boundary energy in the matrix is high while that in the disordered precipitates is zero. (C) 1997 Elsevier S cience S.A.