Origin of internal stress in creep of long range ordered beta brass

被引：0

作者：

Milicka, K ^{[1
]}

Dobes, F ^{[1
]}

机构：

[1] Acad Sci Czech Republ, Inst Phys Mat, Brno 61662, Czech Republic

来源：

ADVANCES IN MECHANICAL BEHAVIOUR, PLASTICITY AND DAMAGE, VOLS 1 AND 2, PROCEEDINGS | 2000年

关键词：

long range ordered alloys; beta brass; creep; internal stress;

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Internal stress in the steady state creep of the long range ordered beta brass Cu50Zn was extensively investigated in a temperature interval from 523 K to 773 K, This interval exceeds the temperature interval of the stability of the long range ordered phase of the alloy. Internal stress was determined using the strain transient dip test technique based on an analysis of the strain response to sudden applied stress reductions performed in the steady state creep. In the long range ordered state of the alloy, the internal stress is up two orders of magnitude greater than the internal stress in the non-ordered alloy. The internal stress in ordered state does not depend on the applied stress, but its temperature dependence is very strong. Possible mechanisms determining the internal stress in the alloy investigated are discussed.

引用

页码：1327 / 1332

页数：6