Microstructure and Mechanical Extruded Properties of Extruded AM50+xCa Magnesium Alloys
As-cast AM50 magnesium alloys containing 0, 1, 2 wt. %Ca were extruded firstly at 673K with an extrusion ratio 1:9, and then at 573K with an extrusion ratio 1:16. Microstructure, tensile properties and fractographs were investigated. With Ca content increasing, the amount of Al2Ca increases and that of Mg17Al12 decreases. Ca refines the microstructure of as-cast and extruded AM50 magnesium alloys. For the extruded magnesium alloys, tensile strength improved and elongation decreased at room temperature, while tensile strength was reduced a little and elongation reduced at the temperature of 100°C, 150°C and 200°C with increasing Ca content. The tearing face increases with Ca content increasing for the tensile fractographs.
W.Ke, E.H.Han, Y.F.Han, K.Kainer and A.A.Luo
Q. D. Wang et al., "Microstructure and Mechanical Extruded Properties of Extruded AM50+xCa Magnesium Alloys", Materials Science Forum, Vols. 488-489, pp. 119-122, 2005