Microstructure identification of devitrified Cu–Ti–Zr–Ni bulk amorphous alloy

The microstructures of devitrified Cu–Ti–Zr–Ni bulk amorphous alloy were identified by X-ray diffractometry (XRD) and transmission electron microscope (TEM). XRD and TEM examinations show that the deep eutectic structures of the tested alloy consist of CuTi2–Cu10Zr7, Cu3Ti–CuZr, Cu3Ti–Cu10Zr7–CuZr low-order eutectics. Moreover, short-range ordering clusters in the melt with configuration similar to that of Cu10Zr7 compound may contribute to the glass forming ability of bulk amorphous Cu–Ti–Zr–Ni alloy.