Analysis of steady-state dynamic recrystallization

被引：39
|
作者：
Graetz, K. [1 ]
Miessen, C. [1 ]
Gottstein, G. [1 ]
机构：
[1] Rhein Westfal TH Aachen, Inst Physical Met & Met Phys, D-52056 Aachen, Germany
来源：
ACTA MATERIALIA | 2014年 / 67卷
关键词：
Dynamic recrystallization; Steady-state flow stress; Grain size distribution; Flow stress continuity equation;
D O I：
10.1016/j.actamat.2013.12.005
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The steady-state behavior of dynamic recrystallization (DRX) was studied in commercially pure copper and the austenitic steel alloy 800H. Investigations on the flow stress behavior during strain-rate and temperature-change tests in the steady-state regime regarding the grain size sensitivity of the flow stress were analyzed. The results confirmed the predicted connection of DRX grain size and deformation-induced subgrain size. Furthermore, the grain size distribution during steady-state DRX was evaluated and found to remain constant. A continuity equation of the growing and shrinking grain distributions is proposed which allows the steady-state flow stress to be calculated. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：58 / 66
页数：9
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