Blocky high-entropy metallic glass and preparation method thereof

Abstract

The invention discloses blocky high-entropy metallic glass. The blocky high-entropy metallic glass comprises, by atomic percent, 23-31% of copper, 22-32% of zirconium, 9-31% of titanium, 14-31% of nickel, 5-18% of aluminum and less than 0.5% of impurities. The blocky high-entropy metallic glass has high strength, high plasticity and high amorphous material-forming ability. The invention also discloses a preparation method of the blocky high-entropy metallic glass. The preparation method has simple processes. Through the preparation method, high-entropy metallic glass rods of which the diameters greater than or equal to 1.5mm are obtained.

Description

technical field

[0001] The invention belongs to the field of metal material preparation, and specifically relates to a bulk high-entropy metallic glass and a preparation method thereof. Background technique

[0002] The composition of high-entropy alloys (HEAs) includes at least five alloying elements, and the atomic percentage of each element is between 5% and 35%. The production of HEAs breaks the traditional design framework of alloy composition based on one element. The high mixing entropy of alloys is an important feature that distinguishes HEAs from traditional alloys. The high mixing entropy of the mixed main elements makes the multi-element alloy tend to form a simple crystal phase-simple solid solution structure (generally body-centered cubic structure (BCC) or face-centered cubic structure (FCC), or a combination of two solid solutions mixed structure), which inhibits the formation of brittle intermetallic compounds. The high entropy effect can effectively reduc...

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