EFFECT OF STRESS STATE ON CAVITATION AND HOLE GROWTH IN SUPERPLASTIC AA-7475 ALUMINUM-ALLOY

被引：0
|
作者：
GUO, ZX [1 ]
RIDLEY, N [1 ]
机构：
[1] UNIV MANCHESTER,CTR MAT SCI,MANCHESTER M13 9PL,LANCS,ENGLAND
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 1990年 / 6卷 / 06期
关键词：
D O I：
10.1179/mst.1990.6.6.516
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A study has been made of the growth of cavities and of artificial holes in AA 7475 alloy sheet material during both uniaxial and equibiaxial tensile straining, with the object of clarifying the effect of stress state on cavitation during superplastic flow. The growth rate of cavities with strain was observed to be lower for uniaxial tension than for equibiaxial tension. An analysis of artificial hole growth data supports these observations, and is consistent with the view that continuous cavity nucleation and cavity coalescence lead to an increase in the apparent cavity growth rate during superplastic flow. © 1990 The Institute of Metals.
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页码：516 / 519
页数：4
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