Thermal vacancies and the yield anomaly of FeAl

被引：56
|
作者：
George, EP
Baker, I
机构：
[1] Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA
[2] Dartmouth Coll, Thayer Sch Engn, Hanover, NH 03755 USA
来源：
INTERMETALLICS | 1998年 / 6卷 / 7-8期
关键词：
iron aluminides; based on FeAl; creep; mechanical properties at high temperature; yield stress; defects : point defects; mechanical properties; theory;
D O I：
10.1016/S0966-9795(98)00063-6
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We review here the George-Baker model for the yield strength anomaly of FeAl which is based on hardening by thermal vacancies at intermediate temperatures and dislocation creep at high temperatures. Results of up-quenching and down-quenching experiments; which corroborate the vacancy hardening mechanism, are discussed. Some implications of the model are compared with available experimental results. (C) 1998 Elsevier Science Limited. All rights reserved.
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页码：759 / 763
页数：5
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