INFLUENCE OF AN EXTERNAL ELECTRIC-FIELD ON THE MICROSTRUCTURE OF SUPERPLASTICALLY DEFORMED 7475 AL

被引：27

作者：

LU, XP

CAO, WD

SPRECHER, AF

CONRAD, H

机构：

[1] Department of Materials Science and Engineering, North Carolina State University, Raleigh, 27695-7907, NC

来源：

JOURNAL OF MATERIALS SCIENCE | 1992年 / 27卷 / 08期

关键词：

D O I：

10.1007/BF01117944

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An externally applied electric field retarded strain-enhanced grain growth and promoted dynamic recrystallization during superplastic deformation of 7475 Al. Also, a more extensive dispersoid-free zone was observed in specimens deformed in the electric field, suggesting that the electric field increased the contribution of diffusion creep to superplastic deformation. The electric field promoted the coarsening of dispersoids, especially in the vicinity of the grain boundaries. Possible mechanisms for the observed effects are discussed.

引用

页码：2243 / 2250

页数：8

共 27 条

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