Composition Design Strategy for High Entropy Amorphous Alloys

Composition Design Strategy for High Entropy Amorphous Alloys

18 January 2024 | Hongyu Ding, Qi Zhang, Kefu Yao
This review presents a comprehensive overview of the composition design strategies for high entropy amorphous alloys (HEAAs). HEAAs are a new class of materials that combine the properties of high entropy alloys (HEAs) and amorphous alloys. The paper discusses various methods for designing HEAAs, including adjusting atomic ratios from quinary bulk metallic glasses, similar element substitution/addition, and combining elements from existing ternary/quaternary alloys. The authors designed a HEAA with a high fracture strength of 2315 MPa by adjusting the atomic ratio of a quinary bulk metallic glass. They also developed a series of Ti-(Zr, Hf, Nb)-Cu-Ni-Be HEAAs with good glass-forming ability. The paper also discusses the effects of high entropy on the properties of the alloy, possible composition design methods, and potential applications. The authors conclude that HEAAs have great potential for future applications in various fields, including biomedical, magnetic refrigeration, catalysis, and wear-resistant materials. The paper provides a useful reference for future research on HEAAs.This review presents a comprehensive overview of the composition design strategies for high entropy amorphous alloys (HEAAs). HEAAs are a new class of materials that combine the properties of high entropy alloys (HEAs) and amorphous alloys. The paper discusses various methods for designing HEAAs, including adjusting atomic ratios from quinary bulk metallic glasses, similar element substitution/addition, and combining elements from existing ternary/quaternary alloys. The authors designed a HEAA with a high fracture strength of 2315 MPa by adjusting the atomic ratio of a quinary bulk metallic glass. They also developed a series of Ti-(Zr, Hf, Nb)-Cu-Ni-Be HEAAs with good glass-forming ability. The paper also discusses the effects of high entropy on the properties of the alloy, possible composition design methods, and potential applications. The authors conclude that HEAAs have great potential for future applications in various fields, including biomedical, magnetic refrigeration, catalysis, and wear-resistant materials. The paper provides a useful reference for future research on HEAAs.
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