Glass forming ability and thermal properties of the Mg-based amorphous alloys with dual rare earth elements addition

The Mg58Cu31Y11-xNdx (x = 0 similar to 11) amorphous alloy rods with 3 similar to 10 mm in diameter were prepared by Cu-mold injection method. The XRD result reveals that these entire Mg58Cu31Y11-xNdx alloy rods exhibit a broaden diffraction pattern of amorphous phase. A clear T-g (glass transition temperature) and supercooled region (about 70 K) were revealed for all of those Mg58Cu31Y11-xNdx amorphous alloy rods. The single stage crystallization of the Mg58Cu31 Y-11 alloy was found to change into two stages crystallization when large amount of Nd element was added into this alloy. In parallel, the crystallization temperature (T,) and supercooled region (AT.) present a decreasing trend with increasing Nd content. The highest gamma value off 0.414 occurs at the alloy compositions of Mg58Cu31Y4Nd7 and Mg58Cu31Y6Nd5 in this alloy system. Therefore, suitable addition of Nd element can obviously increase the glass forming ability for the Mg58Cu31Y11-xNdx alloy system.