Materials Today· 2015Q1· Review
High-entropy alloy: challenges and prospects
- 2,969citations
- Q1SCImago
- 2015year
Short summary
High-entropy alloys (HEAs), composed of multiple principal elements, present unique properties like excellent specific strength and superior performance at extreme temperatures, challenging conventional alloy theories.
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Key points
- HEAs are alloys with multiple principal elements, unlike conventional alloys with one or two.
- They demonstrate superior specific strength and mechanical performance at high and cryogenic temperatures.
- HEAs challenge existing theories and models for phase formation in alloys.
- Potential applications are broad due to their structural and functional richness.
AI-generated from the title and abstract; the full text is not read.
Abstract
High-entropy alloys (HEAs) are presently of great research interest in materials science and engineering. Unlike conventional alloys, which contain one and rarely two base elements, HEAs comprise multiple principal elements, with the possible number of HEA compositions extending considerably more than conventional alloys. With the advent of HEAs, fundamental issues that challenge the proposed theories, models, and methods for conventional alloys also emerge. Here, we provide a critical review of the recent studies aiming to address the fundamental issues related to phase formation in HEAs. In addition, novel properties of HEAs are also discussed, such as their excellent specific strength, superior mechanical performance at high temperatures, exceptional ductility and fracture toughness at cryogenic temperatures, superparamagnetism, and superconductivity. Due to their considerable structural and functional potential as well as richness of design, HEAs are promising candidates for new applications, which warrants further studies.
The authors' abstract, as published at the source. Materials Today, 2015 · DOI ↗
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Field: Mechanical Engineering
Mechanical EngineeringEngineering