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Mechanically Alloyed Amorphous Ti50(Cu0.45ni0.55)44-X Alxsi4b2 Alloys With Supercooled Liquid Region, L C. Zhang, Jian Xu, E Ma

Faculty of Engineering and Information Sciences - Papers: Part A

A high-energy ball milling procedure has been developed to produce amorphous alloys in Ti₅₀(Cu_0.45Ni_0.55)_44−xAl_xSi₄B₂ (x= 0, 4, 8, 12) powder mixtures. The milling products were characterized using x-ray diffraction, differential scanning calorimetry, and transmission electron microscopy. The Ti-based amorphous alloy powders prepared through this solid-state process exhibit a well-defined glass transition and a supercooled liquid region (ΔT_x =64 K) close to the largest achieved so far for Ti-based undercooled melts. The substitution of Al for Cu and Ni has beneficial effects on …