SUPERPLASTICITY IN AN NI3AL BASE ALLOY WITH 8 WT-PERCENT-CR

被引：26

作者：

CHOUDHURY, A ^{[1
]}

MUKHERJEE, AK ^{[1
]}

SIKKA, VK ^{[1
]}

机构：

[1] OAK RIDGE NATL LAB,DIV MET & CERAM,OAK RIDGE,TN 37831

来源：

JOURNAL OF MATERIALS SCIENCE | 1990年 / 25卷 / 07期

关键词：

D O I：

10.1007/BF00587664

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A maximum superplastic elongation of 638% has been obtained in a fine-grained Ni3Al-based intermetallic alloy containing 8wt% Cr. The extent of superplasticity obtained is dependent on the heat treatment given to the alloy, the test temperature and the strain rate. The activation energy of deformation and the value for the strain rate sensitivity parameter were comparable to those noted earlier in metallurgical alloy systems. There was some evidence that dynamic recrystallization plays a role in determining the extent of cavitation in the grain sized encountered here. © 1990 Chapman and Hall Ltd.

引用

页码：3142 / 3148

页数：7

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