A. Kato et al., MICROSTRUCTURE AND MECHANICAL-PROPERTIES OF BULK MG70CA10AL20 ALLOYS PRODUCED BY EXTRUSION OF ATOMIZED AMORPHOUS POWDERS, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 179, 1994, pp. 707-711
The application of high-pressure Ar atomization to Mg70Ca10Al20 alloy
causes the formation of amorphous and Mg phases, and subsequent extrus
ion of the atomized powder at 673 K results in the formation of a bulk
y alloy with a finely mixed structure consisting of Al2Ca embedded in
an Mg matrix. The mixed phase alloy exhibits a high yield strength of
600 MPa, a high specific yield strength of 3.3 MNm kg-1, a high Young'
s modulus of 49 GPa at room temperature, a high elevated-temperature s
trength above 300 MPa in the range up to 550 K, and good corrosion res
istance; these properties are superior to those of commercial Mg-based
alloys. The simultaneous achievement of high mechanical strength and
good corrosion resistance is attractive for subsequent development as
a new type of high-strength materials.