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Analysis on Flow Stress of AZ80 Magnesium Alloy During High Temperature Deformation

Zhimin Zhang

Abstract

The flow stress of AZ80 Mg alloy during high temperature and high strain rate compression was studied by experiments.The results show that,when the forming temperature and strain rate in compression of AZ80 Mg alloy is at 200~400 ℃ and 0.001~10 s-1,respectively,the flow stress rises with the decrease of temperature and the increase of strain rate.The relationship between the flow stress and logarithm of Zener-Hollomon parameter is linear.The relationship between the flow stress in compression and the deformation temperature and strain rate is described correctly by employing the exponent form of Zener-Hollomon parameter.

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Key concepts: Materials science, Flow stress, Strain rate, Deformation (meteorology), Compression (physics), Magnesium alloy, Stress (linguistics), Strain (injury)