Fatigue behavior of Al0.5CoCrCuFeNi high entropy alloys

Hemphill, M.A.; Yuan, Tao; Wang, G.Y.; Yeh, Jien Wei; Tsai, Che-Wei; Chuang, Andrew Chihpin; Liaw, Peter K.

doi:10.1016/j.actamat.2012.06.046

Cited by 678 publications

(292 citation statements)

References 25 publications

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“…Al 0.5 CoCrCuFeNi alloy can show long fatigue lives at relatively high stresses, high endurance limits (540-945 MPa) and endurance limit to ultimate tensile strength ratio (0.402-0.703). [67] These values are comparable to or even better than many conventional alloys, such as various steels, Ti alloys, and Zr-based BMGs. [67] Although some degree of scattering in fatigue life was observed, it is probably due to defects introduced during sample preparation.…”

Section: Wear and Fatigue Propertiesmentioning

confidence: 69%

“…[67] These values are comparable to or even better than many conventional alloys, such as various steels, Ti alloys, and Zr-based BMGs. [67] Although some degree of scattering in fatigue life was observed, it is probably due to defects introduced during sample preparation. If defects can be carefully controlled, the fatigue resistance characteristics in Al 0.5 CoCrCuFeNi are very promising.…”

Section: Wear and Fatigue Propertiesmentioning

confidence: 78%

“…Of all the HEA systems reported, Al-Co-Cr-Cu-Fe-Ni [7,8,21,35,36,49,[60][61][62][63][64][65][66][67][68] and its Cu-free version Al-Co-Cr-Fe-Ni [69][70][71][72][73][74] have been studied most comprehensively. Most of the reported HEA systems emerge from them.…”

Section: Thementioning

confidence: 99%

“…[21,31,32,34,35,98,142] More tests aimed at prolonged service and/or high-temperature applications are also required. These include but are not limited to: fatigue behavior, [67] oxidation resistance, [50,51,104] structural stability, and creep behavior.…”

Section: Corrosion Propertiesmentioning

confidence: 99%

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High-Entropy Alloys: A Critical Review

Tsai

Yeh

2014

Materials Research Letters

2,345

853

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High-entropy alloys (HEAs) are alloys with five or more principal elements. Due to the distinct design concept, these alloys often exhibit unusual properties. Thus, there has been significant interest in these materials, leading to an emerging yet exciting new field. This paper briefly reviews some critical aspects of HEAs, including core effects, phases and crystal structures, mechanical properties, high-temperature properties, structural stabilities, and corrosion behaviors. Current challenges and important future directions are also pointed out.

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Section: Wear and Fatigue Propertiesmentioning

confidence: 69%

Section: Wear and Fatigue Propertiesmentioning

confidence: 78%

Section: Thementioning

confidence: 99%

Section: Corrosion Propertiesmentioning

confidence: 99%

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High-Entropy Alloys: A Critical Review

Tsai

Yeh

2014

Materials Research Letters

2,345

853

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“…Many multi-principal-element alloys have shown exceptional properties, including high strengths at elevated temperatures 6,8,[10][11][12][13][14][15] , ductility 16,17 , toughness 18 , resistance to corrosion 19,20 , wear 21 and fatigue 22 . These favourable properties are sometimes associated with the locally strained solid solution structures, especially those with simple, single-phase microstructures 5,23,24 .…”

mentioning

confidence: 99%

Deviation from high-entropy configurations in the atomic distributions of a multi-principal-element alloy

et al. 2015

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The alloy-design strategy of combining multiple elements in near-equimolar ratios has shown great potential for producing exceptional engineering materials, often known as 'high-entropy alloys'. Understanding the elemental distribution, and, thus, the evolution of the configurational entropy during solidification, is undertaken in the present study using the Al 1.3 CoCrCuFeNi model alloy. Here we show that, even when the material undergoes elemental segregation, precipitation, chemical ordering and spinodal decomposition, a significant amount of disorder remains, due to the distributions of multiple elements in the major phases. The results suggest that the high-entropy alloy-design strategy may be applied to a wide range of complex materials, and should not be limited to the goal of creating single-phase solid solutions.

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Microstructure, Mechanical Properties, and Oxidation Behavior of Al_xCr_0.4CuFe_0.4MnNi High Entropy Alloys

Rao

Wang

et al. 2017

Adv Eng Mater

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Al x Cr 0.4 CuFe 0.4 MnNi (x ¼ 0, 0.1, 0.2, 0.3, 0.4) high entropy alloys (HEAs) were prepared by coppermold casting. The effects of Al were investigated on the microstructure, tensile properties and oxidation behavior of these HEAs. It was shown that the addition of Al resulted in the formation of BCC and ordered BCC phases. The compositional heterogeneity between dendrites and interdendrites was alleviated when the content of Al was small. The mechanical properties of HEAs have been remarkably improved by the addition of Al. Considering the low cost and good mechanical properties, this kind of HEAs is rather competitive among HEAs for engineering application as structural materials. In this work, it was also shown that the oxidation resistance of current HEAs was significantly improved by the addition of Al.

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Fatigue behavior of Al0.5CoCrCuFeNi high entropy alloys

Cited by 678 publications

References 25 publications

High-Entropy Alloys: A Critical Review

High-Entropy Alloys: A Critical Review

Deviation from high-entropy configurations in the atomic distributions of a multi-principal-element alloy

Microstructure, Mechanical Properties, and Oxidation Behavior of Al_xCr_0.4CuFe_0.4MnNi High Entropy Alloys

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Fatigue behavior of Al0.5CoCrCuFeNi high entropy alloys

Cited by 678 publications

References 25 publications

High-Entropy Alloys: A Critical Review

High-Entropy Alloys: A Critical Review

Deviation from high-entropy configurations in the atomic distributions of a multi-principal-element alloy

Microstructure, Mechanical Properties, and Oxidation Behavior of AlxCr0.4CuFe0.4MnNi High Entropy Alloys

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Product

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Microstructure, Mechanical Properties, and Oxidation Behavior of Al_xCr_0.4CuFe_0.4MnNi High Entropy Alloys