Effect of Al content on the mechanical properties and toughening mechanism of Zr-Co-Al alloys prepared by rapid solidification

Zr 50-x/2 Co 50-x/2 Al x ( x = 0, 4, 7) alloys fabricated by water-cooled copper mold casting yields excellent mechanical properties like high strength and large plasticity. Al can reduce the stacking fault energy and simultaneously improve strength and yield strength of the alloys. With increasing Al content, the effect of grain refinement strengthening, solid solution strengthening and second phase precipitation strengthening are enhanced to a...