Effects of Homogenizing and Extrusion on Elongation of As-Cast AZ80 Magnesium Alloy

Abstract:

This paper presents the results of an investigation of the effects of homogenizing heat treatment and extrusion on plasticity of the as-cast AZ80 magnesium alloy. Both the homogenized and non-homogenized billets of AZ80 alloy were forward extruded at several different temperatures and different extrusion ratios. The effects of homogenization and extrusion on plasticity were evaluated by conducting tensile tests on these billets at room temperature and comparing their elongations. The experimental results showed that the elongation of the as-cast AZ80 alloy was increased by 67% after the homogenization treatment. After extrusion, the elongation of both the homogenized and non-homogenized AZ80 alloy increased significantly. The elongation of the homogenized billets decreased gradually with increasing temperature. For the non-homogenized billets, however, the elongation decreased sharply with temperature from 300 to 350 °C and then increased gradually with increasing temperature. There was not clear correlation between the elongations of both the homogenized and non-homogenized billets and the extrusion ratio.

• Periodical: Advanced Materials Research (Volume 626)
• Pages: 386-390
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.626.386
• Online since: December 2012
• Authors: Yao Jin Wu, Bao Hong Zhang, Yong Biao Yang, Zhi Min Zhang
• Keywords: As-Cast AZ80 Magnesium Alloy, Elongation, Forward Extrusion, Homogenizing Treatment

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