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Clarifying the four core effects of high-entropy materials
Wei-Lin Hsu1, Che-Wei Tsai1, An-Chou Yeh1
1High Entropy Materials Center and Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan.
Nature Reviews. Chemistry
|May 2, 2024
Summary
High-entropy materials research, initiated in 2004, is explained by four core effects. This perspective clarifies these effects for better material design and application.
Area of Science:
- Materials Science
- Solid State Chemistry
Background:
- High-entropy materials research began in 2004 with high-entropy alloys.
- The field expanded to include medium-entropy alloys, ceramics, polymers, and composites.
- Fundamental understanding relies on four core effects: high-entropy, severe-lattice-distortion, sluggish-diffusion, and cocktail effects.
Purpose of the Study:
- To discuss the fundamental understanding of the four core effects in high-entropy materials.
- To provide further insights to strengthen the understanding of these effects.
- To aid in the design and application of new high-entropy materials.
Main Methods:
- Literature review and theoretical analysis of established high-entropy material principles.
- Examination and rigorous validation of the four core effects.
- Synthesis of existing knowledge to provide deeper insights.
Main Results:
- The four core effects (high-entropy, severe-lattice-distortion, sluggish-diffusion, cocktail effects) are affirmed as fundamental to high-entropy materials.
- Enhanced understanding of the mechanisms behind the unique phenomena in these materials.
- Established a clearer framework for analyzing and predicting material properties.
Conclusions:
- The clarified understanding of the four core effects is crucial for advancing high-entropy materials science.
- This perspective facilitates the exploration of low-to-high-entropy materials.
- Aids in the rational design of novel materials for diverse applications.
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