Zr-rich amorphous alloy article and method of making the same

A Zr-rich amorphous alloy article, wherein thicknesses of the Zr-rich amorphous alloy article are in a range of about 0.5 mm to about 2 mm, and the Zr-rich amorphous alloy article is made by a method comprising the steps of:

• (a) providing a Zr-rich master alloy made of Zr—Cu—Al—Ni—Nb alloy, wherein a purity of the raw Zr is substantially in a range of 98% to 99.9%;
• (b) providing a vacuum induction furnace, and melting the Zr-rich master alloy in the vacuum induction furnace at a temperature in a range of about 1100 degrees Celsius to about 1200 degrees Celsius while keeping the degree of vacuum in a range of about 10−2 Pa to about 10−3 Pa;
• (c) cooling the Zr-rich master alloy to a temperature in a range of about 800 degrees Celsius to about 900 degrees Celsius in a time period of about 30 min to about 40 min, while keeping the degree of vacuum in a range from about 10−2 Pa to about 10−3 Pa;
• (d) casting the Zr-rich master alloy into a plurality of ingots, and then cooling the ingots to a temperature in a range of about 200 degrees Celsius to about 350 degrees Celsius;
• and
• (e) die casting the ingots to obtain the Zr-rich amorphous alloy article.