Microstructural evolution of slowly solidified Cu-Ti-Zr-Ni amorphous alloy

Abstract The microstructures of slowly solidified 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 CuTi 2 -Cu 10 Zr 7 、Cu 3 Ti-CuZr、Cu 3 Ti-Cu 10 Zr 7 -CuZr low-order eutectics. Moreover, short-range ordering clusters in the melt with configuration similar to that of Cu 10 Zr 7 compound may contribute to the glass forming ability of bulk amorphous Cu-Ti-Zr-Ni alloy.