Study on the Critical Damage Value and Processing Map of AZ80 Magnesium Alloy Forming at Elevated Temperatures

Abstract:

In the present research, a series of AZ80 magnesium alloy billets were compressed with 60% height reduction on hot process simulator at temperatures of 473,523,573,623,673,723K under strain rates of 0.001, 0.01, 0.1,1 and 10s-1. The value of the Cockcroft-Latham equation, i.e. critical damage value, was calculated from the finite element calculations for the compression tests. The results show that the critical damage value is not a constant but varies in a range from 0.1397 to 0.4653. Meanwhile, the processing maps based on the Dynamic Material Modeling (DMM) were constructed. From the processing maps, the optimal deformation processing parameters are the deformation temperatures ranging from 573 to 623K and strain rates ranging from 0.001 to 0.01s-1 in view of improving the mechanical properties of AZ80 alloy component.

• Periodical: Applied Mechanics and Materials (Volumes 275-277)
• Pages: 1904-1910
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.275-277.1904
• Online since: January 2013
• Authors: Yong Xue, Zhi Min Zhang, Yao Jin Wu
• Keywords: AZ80 Magnesium Alloy, Cockcroft and Latham Damage, Processing Map

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