Characteristic of cavity growth of superplastic al 7475 alloy containing a small amount of liquid

被引：0

作者：

Iwasaki, H ^{[1
]}

Mori, T ^{[1
]}

Mabuchi, M ^{[1
]}

Higashi, K ^{[1
]}

机构：

[1] Himeji Inst Technol, Dept Mat Sci & Engn, Himeji, Hyogo 6712201, Japan

来源：

PRICM 4: FORTH PACIFIC RIM INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS AND PROCESSING, VOLS I AND II | 2001年

关键词：

cavity growth; superplasticity; 7475 alminum alloy; liquidp hase;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The change in an artificial hole during superplastic flow was measured at 773 and 806 K in AA 7475 Al alloy to investigate the effect of a small amount of liquid on plastic cavity growth during grain boundary sliding, where 773 K was lower than the incipient partial melting temperature and 806 K was slightly above the incipient partial melting temperature. The cavity growth rate at 806 K was lower than that at 773 K, indicating that cavity growth is suppressed by the presence of a small amount of liquid. The low cavity growth rate due to a small amount of liquid is suggested to be attributed to the change in the. stress state at the liquid boundaries.

引用

页码：1995 / 1997

页数：3

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