Development of High Strength Mg Alloys

Mg 96 Zn 2 Y 2 cast alloy is composed of an α -Mg phase, Mg 12 ZnY phase and Mg 3 Zn 3 Y 2 phase. The coarse dendritic Mg grains have transformed into small cellular Mg grains with the addition of an increasing amount of Zr. Furthermore, increasing the cooling rate led to the precipitation of the fine Mg 3 Zn 3 Y 2 phase and the Mg 12 ZnY phase forming a net-like structure. We found that this alloy has mechanical properties equivalent to those of commercial aluminum alloys with good tensile and fatigue properties at temperatures above 473 K.Cross Reference: