Microstructure and Mechanical Properties of Cast and Semi-Solid Formed Mg-Al-Zn Alloys
Various Mg-Al-Zn alloys with different Al and Zn contents were fabricated by conventional casting and semi-solid forming process. And the microstructure and mechanical properties of the alloys were investigated. In Mg-4%Al-(5~7)%Zn alloys most of the grain boundary phases were found to be Mg-Al-Zn while in Mg-6%Al or Mg-8%Al based alloys the Mg- Al-Zn phase coexisted with Mg17Al12 at grain boundaries. At room temperature the semi-solid formed alloys showed significantly higher tensile properties, especially elongation, than the conventionally cast alloys.
C.G. Kang, S.K. Kim and S.Y. Lee
J. M. Kim et al., "Microstructure and Mechanical Properties of Cast and Semi-Solid Formed Mg-Al-Zn Alloys", Solid State Phenomena, Vols. 116-117, pp. 288-291, 2006