Simulation on dynamic recrystallization behavior of AZ31 magnesium alloy using cellular automaton method coupling Laasraoui–Jonas model

The dynamic recrystallization (DRX) process of AZ31 magnesium alloy including microstructure and dislocation density evolution during hot compression was simulated by adopting the cellular automaton (CA) method coupling the Laasraoui-Jonas model (LJ model). The reliability of simulation depended on...

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Bibliographic Details
Published in:Transactions of Nonferrous Metals Society of China 2013-09, Vol.23 (9), p.2692-2699
Main Authors: LIU, Xiao, LI, Luo-xing, HE, Feng-yi, ZHOU, Jia, ZHU, Bi-wu, ZHANG, Li-qiang
Format: Article
Language:English
Subjects:
Automation
AZ31 magnesium alloy
Cellular
Cellular automata
Computer simulation
Dynamic recrystallization
Magnesium base alloys
Mathematical models
microstructure
simulation
Strain rate sensitivity
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Summary:The dynamic recrystallization (DRX) process of AZ31 magnesium alloy including microstructure and dislocation density evolution during hot compression was simulated by adopting the cellular automaton (CA) method coupling the Laasraoui-Jonas model (LJ model). The reliability of simulation depended on the accuracy of the hardening parameter, the recovery parameter and the strain rate sensitivity in the LJ model. The hardening parameter was calculated in terms of the LJ model and the Kocks-Mecking model (KM model), and then the recovery parameter and the strain rate sensitivity were obtained by using the equation of steady state flow stress for DRX. Good agreements between the simulations and the experimental observations were achieved.
ISSN:1003-6326
DOI:10.1016/S1003-6326(13)62786-7