The effects of microalloying on thermal stability, mechanical property and corrosion resistance of Mg-based bulk metallic glasses

Abstract (Mg 65 Cu 20 Y 10 Zn 5 ) 98 M 2 (M = Ti, Cr) bulk metallic glasses with diameter of 3 mm were prepared by copper mold casting. The effects of Ti or Cr on thermal stability, mechanical property and corrosion resistance were systematically investigated. It's shown that the Glass forming ability of the Mg 65 Cu 20 Y 10 Zn 5 bulk metallic glasses slightly decreases with the addition of the elements. Whereas, the strength and corrosion resistance significantly increase. The superior corrosion resistance of the amorphous sample containing Ti or Cr is presented for the forming of homogeneous passive layer with highly protective oxides.