Thermodynamic aspects of the grain boundary segregation in Cu(Bi) alloys

Authors
Chang, LS Rabkin, E Straumal, BB Baretzky, B Gust, W
Citation
Ls. Chang et al., Thermodynamic aspects of the grain boundary segregation in Cu(Bi) alloys, ACT MATER, 47(15-16), 1999, pp. 4041-4046
Citations number
16
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science",Metallurgy
Journal title
ACTA MATERIALIA
ISSN journal
13596454 → ACNP
Volume
47
Issue
15-16
Year of publication
1999
Pages
4041 - 4046
Database
ISI
SICI code
1359-6454(19991112)47:15-16<4041:TAOTGB>2.0.ZU;2-I
Abstract
The grain boundary segregation of Bi in dilute polycrystalline Cu-Bi alloys was systematically studied as a function of temperature and composition. T hr: temperature dependencies of the Gibbsian excess of Bi at the grain boun daries exhibited discontinuous changes at the temperatures close to, but di fferent from the bulk solidus temperatures. The observed segregational phas e transition was interpreted in terms of prewetting model. (C) 1999 Acta Me tallurgica inc. Published by Elsevier Science Ltd All rights reserved.