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In the present work Mg-Ga, Mg-Sn and Mg-In binary alloys with 1 and 3 wt.% Ga, Sn or In were studied i n the as-cats state. Selected Mg-3Ga and Mg-3Sn binary al loys were subsequently extruded at 400 °C. Structur es of investigated materials were studied using scanning electron microscopy and energy dispersive spectrome try. Mechanical properties were determined by Vickers hardness measurements and tensile and compressive testi ng. All materials were composed of primary magnesium dendri tes and contained strong dendritic microsegregation . Both Ga and Sn have strengthening effect on magnesium; t he effect of In is negligible. The extruded alloys were characterized by grain size in the range between 10-50 μm. Tensile yield strength and ultimate tensile st rength of extruded alloys were clearly improved.

Effect of Microstructure on the Mechanical Properties of Binary Magnesium Alloys Containing Ga, In and Sn