In the current study, we investigated the feasibility of fabricating amorphous Ni57Zr20Ti20Si3 powders by mechanical alloying, and consolidating them into bulk metallic glasses by a vacuum hot pressing technique. The as-milled and hot-pressed samples were examined by X-ray diffraction, scanning electron microscope, and differential thermal analysis. According to the results, amorphous Ni57Zr20Ti20Si3 powders were prepared after milling elemental powder mixtures for 5 h. The amorphous powders were found to exhibit a wide supercooled liquid region of 88 K before crystallization. Bulk metallic glasses were prepared successfully by consolidating the as-milled Ni57Zr20Ti20Si3 amorphous powders using vacuum hot pressing in the supercooled liquid region. Vickers microhardnesses of the as-pressed samples are in the range of 788-830 kg/mm2.
ASJC Scopus subject areas
- Metals and Alloys
Lee, P. Y., Hung, S. S., Hsieh, J. T., Lin, Y. L., & Lin, C. K. (2002). Consolidation of amorphous Ni-Zr-Ti-Si powders by vacuum hot-pressing method. Intermetallics, 10(11-12), 1277-1282. https://doi.org/10.1016/S0966-9795(02)00154-1