A brief review of high-entropy films

Yan, Xue Hui; Li, Jinshan; Zhang, Wei Ran; Zhang, Yong

doi:10.1016/j.matchemphys.2017.07.078

Cited by 176 publications

(53 citation statements)

References 42 publications

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“…are applied to the study of HEAs. And with the application of high-throughput experimental method in HEAs research [141], a series of small samples with different composition or one sample containing composition gradient were fabricated. Combing with the highly developing technology of microscopy, material properties testing and computer, a lot of data and reliable relationship between composition and properties will be got in a short time.…”

Section: Future Trends and Prospectsmentioning

confidence: 99%

Science and technology in high-entropy alloys

2018

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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.

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Section: Future Trends and Prospectsmentioning

confidence: 99%

Science and technology in high-entropy alloys

2018

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“…Therefore, research efforts have tended to be application driven and directed toward exploring new alloy compositions with promising mechanical properties (Otto et al, 2013). By combining the excellent mechanical performance of HEAs with thin film technology, HEA coatings have been shown to exhibit properties that significantly surpass its bulk counterpart, further increasing its application potential (Yan et al, 2017). Gao et al have found that CoCrFeNiAl 0.3 metallic film has a nanocrystalline structure (grain size ∼10 nm) and its hardness is about four times of that of the bulk single-crystal counterpart Liao et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Nanostructured CoCrFeNiMn High-Entropy Alloy (HEA) Coating

et al. 2018

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An equiatomic CoCrFeMnNi high-entropy alloy (HEA) thin film coating has been successfully developed by high-vacuum Radio Frequency (RF) magnetron sputtering. The deposition of a smooth and homogenous thin film with uniformly distributed equiaxed nanograins (grain size ∼ 10 nm) was achieved through this technique. The thin film coating exhibits a high hardness of 6.8 ± 0.6 GPa, which is superior compared to its bulk counterpart owing to its nanocrystalline structure. Furthermore, it also shows good ductility through nanoindentation, which demonstrates its potential to serve as an alternative to traditional transition metal nitride or carbide coatings for applications in micro-fabrication and advanced coating technologies.

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“…Until 2016, Yeh et al [19] first reviewed the research progress in the area of the HEA coatings in their book chapter, which included the preparation methods, properties and applications of the HEA coatings and other HEA-Based coatings. In 2017, Yan et al [49] reported a review of the highentropy films, which briefly discussed the preparation methods, phase structure, and various properties of the high-entropy films. Relative to the two published literatures, this paper will more deeply discuss the relationships between microstructures and properties, more extensively summarize the properties including corrosion resistance, physical characteristics, etc., which the published ones rarely involved, further bring forward the design criteria for achieving the excellent properties, and generalize the research progress of modeling and simulations for HEA films and coatings, which is expected to shed a light on the future research of the highperformance HEA films and coatings.…”

Section: Introductionmentioning

confidence: 99%

Microstructures and properties of high-entropy alloy films and coatings: a review

Liu

Liaw

2018

Materials Research Letters

425

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In the past 14 years, as a branch of high-entropy alloy (HEA) materials, HEA films and coatings have exhibited the attractive and unique properties, relative to the conventional film and coating materials. The recent research and development of HEA films and coatings are reviewed in this paper. At first, the basic concept of HEAs films and coatings are introduced. Then, their preparation technologies, microstructures and appealing properties are summarized. Moreover, the possible reasons and design criteria for achieving the excellent properties are discussed. Finally, the suggested future research work for the HEA films and coatings are outlined. IMPACT STATEMENT Preparation technologies, microstructures, and properties of HEA films and coatings are reviewed in this paper. The design criteria and suggested research directions are further discussed and proposed.

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A brief review of high-entropy films

Cited by 176 publications

References 42 publications

Science and technology in high-entropy alloys

Science and technology in high-entropy alloys

Mechanical Properties of Nanostructured CoCrFeNiMn High-Entropy Alloy (HEA) Coating

Microstructures and properties of high-entropy alloy films and coatings: a review

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