Tensile Properties of Squeeze Cast Mg-Al-Sr Alloy under Applied Pressures

Abstract:

The focus of this study is on development of alternative manufacturing processes for potential high temperature magnesium-aluminium-strontium alloys. The effect of external pressure on tensile properties of squeeze cast Mg-Al-Sr alloy was investigated. Four different applied levels, 0, 30, 60 and 90 MPa, were employed to exert on a Mg-6 wt.% Al – 0.5 wt.% Sr alloy during squeeze casting. The results of tensile testing indicate that the ultimate tensile strength (UTS), yield strength (YS) and elongation (E_f) of the squeeze cast Mg-Al-Sr alloy increase with increasing applied pressure level. The microstructural analysis and porosity measurements suggest that the tensile property enhancement resulting from applied pressure should be attributed to microstructure refinement and porosity reduction of the squeeze cast alloy.

• Periodical: Advanced Materials Research (Volume 1088)
• Pages: 181-185
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1088.181
• Online since: February 2015
• Authors: Li Fang, Henry Hu*, Shu Ping Wang
• Keywords: Magnesium, Squeeze Casting, Strontium Addition, Tensile Properties

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