Effect of prestrain on the superplastic behaviour of a fine grained 7475 Al alloy

被引：0

作者：

Mahidhara, RK ^{[1
]}

Mukherjee, AK ^{[1
]}

机构：

[1] UNIV CALIF DAVIS,DEPT CHEM ENGN & MAT SCI,DAVIS,CA 95616

来源：

JOURNAL OF MATERIALS SCIENCE | 1996年 / 31卷 / 02期

关键词：

D O I：

10.1007/BF01139155

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of prestraining at a fast strain rate (region III) on the subsequent superplastic behaviour (region II) of a 7475 Al alloy has been studied. The results show that prestraining causes a decrease in the elongation to failure as compared to the non-prestrained (as-received) samples. This decrease in elongation is postulated to be associated with the growth of cavities formed during prestraining as well as grain growth during deformation in region II. Prestraining in region III did not lead to any observable inhomogeneities in strain distribution during subsequent deformation.

引用

页码：381 / 385

页数：5

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