材料期刊网

Melt treatment is widely used to mediate the structure of materials. Recently, it is evidenced to be a new way to improve the glass forming ability (GFA) and thermal stability of the amorphous alloys. Bulk metallic glass was obtained through this process in the Al-Ni-La alloy system. In this work, the mechanism of melt treatment on the GFA and thermal stability of the Al-Ni-La alloy was studied. A Ni-rich metastable high-melting-temperature-phase is found to occur to this alloy system. The elimination of the Ni-rich phase through the melt treatment is attributed to stabilize the thermal stability of the melt and, accordingly, enhances the GFA and thermal stability of the amorphous alloy.