Science and technology in high-entropy alloys
TLDR
In this article, the authors review the recent development of high-entropy alloys and summarize their preparation methods, composition design, phase formation and microstructures, various properties, and modeling and simulation calculations.Abstract:
As human improve their ability to fabricate materials, alloys have evolved from simple to complex compositions, accordingly improving functions and performances, promoting the advancements of human civilization. In recent years, high-entropy alloys (HEAs) have attracted tremendous attention in various fields. With multiple principal components, they inherently possess unique microstructures and many impressive properties, such as high strength and hardness, excellent corrosion resistance, thermal stability, fatigue, fracture, and irradiation resistance, in terms of which they overwhelm the traditional alloys. All these properties have endowed HEAs with many promising potential applications. An in-depth understanding of the essence of HEAs is important to further developing numerous HEAs with better properties and performance in the future. In this paper, we review the recent development of HEAs, and summarize their preparation methods, composition design, phase formation and microstructures, various properties, and modeling and simulation calculations. In addition, the future trends and prospects of HEAs are put forward.read more
Citations
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Journal ArticleDOI
High-entropy ceramics: Present status, challenges, and a look forward
Huimin Xiang,Yan Xing,Fu zhi Dai,Hongjie Wang,Lei Su,Lei Miao,Guo-Jun Zhang,Yiguang Wang,Xiwei Qi,Lei Yao,Hailong Wang,Biao Zhao,Jianqiang Li,Yanchun Zhou +13 more
TL;DR: High-entropy ceramics (HECs) as mentioned in this paper are solid solutions of inorganic compounds with one or more Wyckoff sites shared by equal or near-equal atomic ratios of multi-principal elements.
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Outstanding tensile properties of a precipitation-strengthened FeCoNiCrTi0.2 high-entropy alloy at room and cryogenic temperatures
Yang Tong,Da Chen,Bin Han,Bin Han,Jun-Wei Wang,Rui Feng,Tao Yang,C. Zhao,Yilu Zhao,Wei Guo,Yasuo Shimizu,C.T. Liu,Peter K. Liaw,Koji Inoue,Yasuyoshi Nagai,Alice Hu,Ji-Jung Kai +16 more
TL;DR: In this article, a precipitation-strengthened FeCoNiCrTi0.2 high-entropy alloy strengthened by two types of coherent nano-precipitates but with the same composition was fabricated, and its tensile properties at room and cryogenic temperatures (77 K) and the corresponding defect-structure evolution were investigated.
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Fundamental Theory of Biodegradable Metals—Definition, Criteria, and Design
Yang Liu,Yufeng Zheng,Xie-Hui Chen,Jian-An Yang,Haobo Pan,Dafu Chen,Luning Wang,Jialiang Zhang,Donghui Zhu,Shuilin Wu,Kelvin W.K. Yeung,Rong-Chang Zeng,Yong Han,Shaokang Guan +13 more
TL;DR: In this article, the dual criteria of biodegradability and biocompatibility are proposed for BMs, and all metallic elements in the periodic table with accessible data are screened on the basis of these criteria.
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Hierarchical microstructure design to tune the mechanical behavior of an interstitial TRIP-TWIP high-entropy alloy
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TL;DR: In this article, a hierarchical microstructure design was employed to improve the mechanical properties of an interstitial carbon doped high-entropy alloy by cold rolling and subsequent tempering and annealing.
References
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Journal ArticleDOI
Nanostructured High-Entropy Alloys with Multiple Principal Elements: Novel Alloy Design Concepts and Outcomes
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Journal ArticleDOI
A critical review of high entropy alloys and related concepts
Daniel B. Miracle,Oleg N. Senkov +1 more
TL;DR: High entropy alloys (HEAs) are barely 12 years old as discussed by the authors, and the field has stimulated new ideas and inspired the exploration of the vast composition space offered by multi-principal element alloys.
Journal ArticleDOI
Microstructures and properties of high-entropy alloys
TL;DR: The concept of high entropy introduces a new path of developing advanced materials with unique properties, which cannot be achieved by the conventional micro-alloying approach based on only one dominant element as mentioned in this paper.
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