Non-nickel and non-copper zirconium-based bulk amorphous alloy

Abstract

The invention discloses a non-nickel non-copper typed zirconium based block non-crystal alloy, which comprises the following parts to cast through casting method: 53-57% Zr , 20-23.5% Al , 14-22.5%Co and 1-8% Ag.

Description

technical field [0001] The invention belongs to bulk amorphous alloys, in particular to a nickel-free and copper-free zirconium-based bulk amorphous alloy with strong glass-forming ability. Background technique [0002] Bulk amorphous alloy, also known as bulk metallic glass, is a new type of metastable material developed in the late 1980s. It is composed of a variety of elements with large atomic radii and large negative heat of mixing. Component system (above ternary). The supercooled liquid of this type of alloy has special kinetic and thermodynamic characteristics, and the critical cooling rate for amorphous transformation can be reduced to below 100k / s, so large-volume amorphous alloys can be prepared by conventional copper mold casting. [0003] In recent years, people have obtained bulk amorphous materials in more than ten systems such as Zr-based, Pd-based, La-based, Mg-based, Fe-based, Cu-based, Ni-based, and rare earth-based, and the maximum amorphous size has exc...

AI Technical Summary

Problems solved by technology

However, if nickel and copper are removed from zirconium-based amorphous alloys, the amorphous formation ability of the system is often greatly reduced, and large-sized amorphous alloys cannot be prepared.

Images