Journal
ACTA MATERIALIA
Volume 67, Issue -, Pages 58-66Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2013.12.005
Keywords
Dynamic recrystallization; Steady-state flow stress; Grain size distribution; Flow stress continuity equation
Funding
- Deutsche Forschungsgemeinschaft (DFG) [Go 335/42-1, BL 512 4/1]
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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.
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