Predicting the evolution of dislocation density following hot deformation

被引：4
|
作者：
Huang, Mingxin [1 ]
Perlade, Astrid [2 ]
Rivera-Diaz-del-Castillo, Pedro E. J. [3 ]
机构：
[1] Univ Hong Kong, Dept Mech Engn, Hong Kong, Hong Kong, Peoples R China
[2] ArcelorMittal Res, F-57283 Maizieres Les Metz, France
[3] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England
来源：
PHILOSOPHICAL MAGAZINE LETTERS | 2011年 / 91卷 / 06期
关键词：
dislocations; stress relaxation; recovery; STEADY-STATE DEFORMATION; C-MN STEEL; FCC METALS; RECOVERY; STRESS; RECRYSTALLIZATION; THERMODYNAMICS; AUSTENITE; BEHAVIOR; KINETICS;
D O I：
10.1080/09500839.2011.565812
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A model to predict the evolution of dislocation density following hot deformation is presented in this article. The model is validated by stress relaxation experiments on austenite at various temperatures. It is found that the activation energy for self-diffusion is the rate-controlling parameter determining the evolution of dislocation density, and hence the recovery rate. A methodology to control the softening experienced by high-temperature alloys is proposed.
引用
收藏
页码：387 / 393
页数：7
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