A MODEL FOR THE EVOLUTION OF GRAIN-SIZE DISTRIBUTION DURING SUPERPLASTIC DEFORMATION

被引：36

作者：

GHOSH, AK ^{[1
]}

RAJ, R ^{[1
]}

机构：

[1] CORNELL UNIV,DEPT MAT SCI & ENGN,ITHACA,NY 14853

来源：

ACTA METALLURGICA | 1986年 / 34卷 / 03期

关键词：

ALUMINUM METALLOGRAPHY - Grain Size and Shape;

D O I：

10.1016/0001-6160(86)90080-5

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

A first order model for dynamic change in grain size distribution with strain is developed to explain the shape of stress-strain curves obtained during superplastic deformation of aluminum alloys. The model is based on the assumption that regions deforming by diffusion creep suffer strain induced grain growth, while dislocation creep results in grain refinement. The possible significance of these concepts in classical dynamic recrystallization phenomena is discussed.

引用

页码：447 / 456

页数：10

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