pISSN : 1598-706X / eISSN : 2288-8381
한국주조공학회지 (22권5호 245-251)
Study on the Fabrication of Mg Alloy Sheet by a Semi-Solid Forming Process
반고상 성형법에 의한 Mg 합금 박판재의 제조에 관한 연구
Jeong-Min Kim, Bong-Koo Park, Ki-Tae Kim, Woon-Jae Jung
Korea Institute of Industrial Technology
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.
AZ91, AM50, Semi-solid, Mg, Filling
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