Effect of Zr content on microstructure and mechanical properties of AlCoCrFeNi high entropy alloy

Chen, Jian; Niu, Pengyun; Liu, Yunzi; Lu, Yukun; Wang, Xianhui; Peng, Y.Z.; Liu, Jiangnan

doi:10.1016/j.matdes.2016.01.033

Cited by 155 publications

(39 citation statements)

References 38 publications

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“…2). Al can be partly dissolved into the as-cast CrCoNi MEA although the Al element has a very negative enthalpy of mixing and larger atomic size compared with the other constituent elements (Table 3) [25,48] . Therefore, with the increase of Al content in single FCC MEAs, the crystal lattice constant increases sharply.…”

Section: Discussionmentioning

confidence: 99%

Effect of Al on microstructure and mechanical properties of cast CrCoNi medium-entropy alloy

Liu

Fan

et al. 2018

China Foundry

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Section: Discussionmentioning

confidence: 99%

Effect of Al on microstructure and mechanical properties of cast CrCoNi medium-entropy alloy

Liu

Fan

et al. 2018

China Foundry

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“…At present, several mature high-entropy systems have been formed, including Al x CoCrCuFeNi [4], CoCrFeMnNi [5], WNbMoTaV [8], and GdTbDyTmLu [18]. The structures and properties can be regulated through a series of elemental additions or changes in the content, such as the addition of Ti [19], Zr [20], B [20], V [21], and/or Mo [22,23]. Some HEAs have the high glass-forming ability, such as PdPtCuNiP [24], ScCaYbMgZn [25], and ZrHfTiCuFe [26].…”

Section: Research Statusmentioning

confidence: 99%

Applications of High-Pressure Technology for High-Entropy Alloys: A Review

Dong

Zhou

Zhang

et al. 2019

Metals

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High-entropy alloys are a new type of material developed in recent years. It breaks the traditional alloy-design conventions and has many excellent properties. High-pressure treatment is an effective means to change the structures and properties of metal materials. The pressure can effectively vary the distance and interaction between molecules or atoms, so as to change the bonding mode, and form high-pressure phases. These new material states often have different structures and characteristics, compared to untreated metal materials. At present, high-pressure technology is an effective method to prepare alloys with unique properties, and there are many techniques that can achieve high pressures. The most commonly used methods include high-pressure torsion, large cavity presses and diamond-anvil-cell presses. The materials show many unique properties under high pressures which do not exist under normal conditions, providing a new approach for the in-depth study of materials. In this paper, high-pressure (HP) technologies applied to high-entropy alloys (HEAs) are reviewed, and some possible ways to develop good properties of HEAs using HP as fabrication are introduced. Moreover, the studies of HEAs under high pressures are summarized, in order to deepen the basic understanding of HEAs under high pressures, which provides the theoretical basis for the application of high-entropy alloys.Metals 2019, 9, 867 2 of 16 with the development of human civilization. However, due to the limitations of technical conditions, the application of pressure has just begun. High-pressure technology is a relatively-young and emerging discipline, but most of the condensed matter in the universe is under high pressure. The research on high pressures relies heavily on the experimental techniques, and each progression of the method has led to a significant expansion of our basic understanding of material behavior under high pressures.The progress in high-pressure experimental technology has directly promoted the development of the high-pressure science and provided an advanced method for frontier subjects. It has become an important field in modern scientific research. There are few studies on the structures of HEAs under high pressures. Interactions within the materials will change under high pressures and induce the generation of high-pressure phase transitions, thus becoming a new material with special properties. The materials will show many unique properties under high pressures, ones which do not exist under normal conditions, providing a subject for the in-depth study of materials. The behavior of HEAs under high pressures is a potential research direction for the future. High-Entropy Alloys (HEAs) ConceptHEAs are kinds of alloys developed in recent years. HEAs are loosely defined as solid-solution alloys that contain more than five principal elements in an equal or near-equal atomic percent (at. %) [4]. These kinds of alloys were defined by Yeh et al. [4] in 2004 as HEAs, and in the same year named by Cantor [5] et al. as the multi...

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“…Observed phases include disordered solid solutions, amorphous phases and intermetallic compounds. A large variety of morphologies are seen, arising from phase transformations that include order/disorder transformation [5,6], spinodal decomposition [7][8][9][10], precipitation [4,11,12] and massive transformation [13,14].…”

Section: Introductionmentioning

confidence: 99%

Mapping the world of complex concentrated alloys

2017

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This work explores the mechanical properties of high entropy alloys (HEAs) and complex concentrated alloys (CCAs) by comparing them with commercially available engineering alloys including industrystandard aerospace alloys. To reach this goal we have developed a materials database covering the main mechanical properties of HEAs and CCAs from the published literature. The database is used to represent various property spaces enabling an assessment of their performance for light weight structures and high-temperature structural applications. In addition, we illustrate the effects of alloying and of specific elements on the room temperature mechanical properties of HEAs and CCAs. With densities between titanium alloys and steels or nickel alloys, the best CCAs exceed commercial alloys in uniaxial loading and beam bending at room temperature. Where use temperature or cost excludes commercial alloys based on Mg, Al or Ti, the best CCAs also offer attractive specific yield strength in panel bending and specific stiffness for all loading conditions at room temperature. Many CCAs have superior structural properties at elevated temperatures. 2 KEYWORDSHigh entropy alloys, complex concentrated alloys, mechanical properties, materials selection, property space.

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Effect of Zr content on microstructure and mechanical properties of AlCoCrFeNi high entropy alloy

Cited by 155 publications

References 38 publications

Effect of Al on microstructure and mechanical properties of cast CrCoNi medium-entropy alloy

Effect of Al on microstructure and mechanical properties of cast CrCoNi medium-entropy alloy

Applications of High-Pressure Technology for High-Entropy Alloys: A Review

Mapping the world of complex concentrated alloys

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