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Abstract
The glass forming ability (GFA), thermal stability and mechanical properties of Mg–Cu–Ni–Nd–Y alloy were investigated by using copper mold casting, differential scanning calorimeter (DSC) and compression tester. The results show that both the GFA and thermal stability for Mg 58.5Cu 30.5Y 11 alloy are improved when partial Cu and Y are substituted by Ni and Nd, respectively. A full amorphous rod of 13 mm in diameter was obtained for Mg 58.5Cu 27.5Ni 3Nd 5Y 6 alloy, which has a large-supercooled liquid region, and a narrow melting temperature interval compared with Mg 58.5Cu 30.5Y 11 alloy. The GFA was discussed in term of experiential parameters. We suggest using the relative difference between calculated and experimental fracture stress to estimate the reliability of experimental stress, which is correlated well with our results.
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