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Study on the Fabrication of Mg Alloy Sheet by a Semi-Solid Forming Process  

Kim, Jeong-Min (Korea Institute of Industrial Technology)
Park, Bong-Koo (Korea Institute of Industrial Technology)
Kim, Ki-Tae (Korea Institute of Industrial Technology)
Jung, Woon-Jae (Korea Institute of Industrial Technology)
Publication Information
Journal of Korea Foundry Society / v.22, no.5, 2002 , pp. 245-251 More about this Journal
Abstract
Cast AZ91 and extruded AM50 alloys were isothermally heated as solid/liquid coexistent temperatures, and semi-solid formed into sheets. Mold filling ability of semi-solid slurry with different liquid fractions was investigated in relation to process variables such as injection speed and mold temperature. Relatively uniform distribution of solid particle size and liquid fraction were observed throughout the semi-solid formed sheet. AZ91 alloy sheets were also manufactured by conventional die casting and compared with the semi-solid formed. It was found that the surface was more smooth and the dimensional accuracy was higher in case of the semi-solid formed.
Keywords
AZ91; AM50; Semi-solid; Mg; Filling;
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