HIGHLY PLASTIC ZIRCONIUM-BASED BULK AMORPHOUS ALLOY WITH NO BERYLLIUM OR NICKEL, AND METHOD FOR PREPARING SAME

摘要

Disclosed are a highly plastic zirconium-based bulk amorphous alloy with no beryllium or nickel, and a method for preparing same. The alloy has the components in atom percent as follows: Zr: 38-50％, Hf: 2-15％, Cu: 20-30％, Fe: 5-10％, Al: 10-15％, Co: 0-5％, Ag: 0-5％, and Nb: 0-5％; and the alloy is prepared by arc melting/copper mold suction casting. The amorphous alloy contains no metal elements such as Be and Ni, thus improving the biocompatibility of the Zr-based alloy; the alloy has a high amorphous forming ability, which allows a Zr-based bulk amorphous alloy with a critical size of no less than 5mm to be prepared by a copper mold suction casting method; the alloy has a high hardness, the Vickers hardness thereof always being more than 540Hv; the alloy has a plastic deformation ability of more than 3%; and the alloy has a wide super-cooled liquid region range, the maximum being 92K. The alloy has a wide application prospect in the field of complex and precise medical devices and parts, artificial joints and bones and other biomedical materials.