2003•Acta Scientiarum Naturalium Universitatis SunyatseniRequires access

Flow stress and softening behavior of wrought magnesium alloy AZ31B at elevated temperature

汪凌云, 范永革, 黄光杰, 黄光胜

Abstract

The flow stress and softening behavior of AZ31B magnesium alloy in hot compression were investigated. The relationship of flow stress, temperature and strain rate was appropriately described with the exponential form of Zener-Hollemen parameter during steady state deformation of alloy at 573-723K, 0.01-5s-1. Dynamic recrystallization is the softening mechanism of AZ31B in hot compression. The flow curves of alloy have almost no peak value at 723K and lower strain rate, presenting feature of geometric dynamic recrystallization.

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Key concepts: Dynamic recrystallization, Softening, Flow stress, Materials science, Strain rate, Magnesium alloy, Metallurgy, Hot working