Forming Analysis of AZ80 Magnesium Alloy Thick-Walled Tube Fabricated by Hydrostatic Shrinkage Extrusion

Abstract:

In order to obtain high performance magnesium alloy thick-walled tubes, the magnesium alloy ingot was extruded by hydrostatic shrinkage extrusion technology. Through a series of experiments, it was found that the magnesium alloy tube was not formed in the extrusion ratio that is smaller than 2.11 . Deform-3D software was used to simulate the tube forming process under different extrusion ratios. It was noting that at the condition of the extrusion ratio of 2.11, the equivalent stress and strain of the extruded tube at the fixed sizing zone were obviously unevenly distributed, which was disappeared with the increase of the extrusion ratio. Compared with the homogenized magnesium alloy , the yield strength, the tensile strength and the elongation were improved when the tensile test was carried out on the extruded magnesium alloy thick-walled tube. These results clearly showed that the mechanical properties of magnesium alloy tubes were improved after hydrostatic extrusion.

• Periodical: Materials Science Forum (Volume 950)
• Pages: 80-84
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.950.80
• Online since: April 2019
• Authors: Yang Li, Ren Shu Yuan*
• Keywords: Critical Extrusion Ratio, Hydrostatic Extrusion, Magnesium Alloy, Numerical Simulation, Tensile Test

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