Effect of grain size on grain boundary segregation

被引：75

作者：

Ishida, K

机构：

[1] Department of Materials Science, Faculty of Engineering, Tohoku University

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1996年 / 235卷 / 02期

关键词：

segregation; grain size; grain boundary; interface; thermodynamics;

D O I：

10.1016/0925-8388(95)02094-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A simple thermodynamic calculation to assess the effect of grain size on grain boundary segregation has been performed. It is shown that in binary alloys when the bulk solute content is small, segregation increases with increasing grain size. In ternary alloys, however, intergranular segregation depends both on the magnitude of segregation free energy and the bulk concentrations of the solute. It is pointed out that grain size could play an important role in the segregation phenomena, not only in metallic but also in ceramic systems.

引用

页码：244 / 249

页数：6

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