Bulk Glass Formation of 12 mm Rod in La–Cu–Ni–Al Alloys

Microstructures of La–Cu–Ni–Al alloys of rod samples with 12 mm diameter prepared by copper mould casting along La86−x[Cu0.5Ni0.5]xAl14 compositional line were studied by scanning electronic microscope (SEM) observation, and X-ray diffraction (XRD). Glassy rod with diameter of 12 mm can be formed by copper mould casting. The alloy has a composition near to La62[Cu0.5Ni0.5]24Al14, and has a very narrow supercooled liquid region, ΔTx=29 K, (ΔTx=Tx−Tg, where Tx is the onset crystallisation temperature and Tg is glass transition temperature).