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发表时间：2008-01-01

发表刊物：金属学报

卷号：44

期号：3

页面范围：292-296

ISSN号：0412-1961

摘要：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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