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Date of Publication:2008-01-01

Journal:金属学报

Volume:44

Issue:3

Page Number:292-296

ISSN No.:0412-1961

Abstract:Based on the metallurgical principles of hot working process, a two-dimensional cellular automata model for the dynamic recrystallization (DRX) was built up to simulate a series of processes such as the work hardening, dynamic recovery, nucleation and growth of recrystallization grains (R-grains). By using the model, the variations of the flow stress, the morphology, orientation, and size of R-grains during the whole hot working process can be obtained. The flow stress can be calculated from the average dislocation densities in the matrix and the R-grains. The DRX processes of pure copper under different strains, strain rates, and temperatures were simulated, and the simulated results agree well with experimental results.

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