ISOTHERMAL GAMMA-PRECIPITATION IN A BETA-CU-ZN-AL ALLOY

Authors
CASTRO ML ROMERO R
Citation
Ml. Castro et R. Romero, ISOTHERMAL GAMMA-PRECIPITATION IN A BETA-CU-ZN-AL ALLOY, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 255(1-2), 1998, pp. 1-6
Citations number
23
Categorie Soggetti
Material Science
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
255
Issue
1-2
Year of publication
1998
Pages
1 - 6
Database
ISI
SICI code
0921-5093(1998)255:1-2<1:IGIABA>2.0.ZU;2-P
Abstract
The isothermal decomposition of the beta phase in a Cu-18.52Zn-14.74Al (at.%) alloy was investigated. On ageing the alloy in the temperature range of 473 to 773 K, the beta phase was found to decompose by the p recipitation of gamma and alpha phases. The growth rate of the gamma p hase precipitates shows that the involved process is a classical diffu sion-limited. During their growth, the precipitates show evidence of m orphological splitting. By considering the elastic energies of various precipitates shapes, an effective size for splitting is predicted. (C ) 1998 Elsevier Science S.A. All rights reserved.