Microstructure and wear behavior of AlxCo1.5CrFeNi1.5Tiy high-entropy alloys

Chuang, Ming-Hao; Tsai, Ming–Hung; Wang, Woei-Ren; Lin, Su-Jien; Yeh, Jien‐Wei

doi:10.1016/j.actamat.2011.06.041

Cited by 1,230 publications

(330 citation statements)

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“…Alloys containing several elements mixed in near-equimolar ratios, also known as high-entropy alloys, have shown exceptional engineering properties, such as high strengths at elevated temperatures 6,8,10 , ductility 16 , toughness 18 , and resistance to corrosion 20 , wear 21 and fatigue 22 . These findings have generated great interest, and intense efforts are underway to further develop high-entropy alloys for practical applications.…”

Section: Discussionmentioning

confidence: 99%

“…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 .…”

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confidence: 99%

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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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Section: Discussionmentioning

confidence: 99%

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confidence: 99%

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

et al. 2015

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“…Different from conventional alloys that are typically designed based on one or two principal elements, HEAs are composed of more than five principal elements. It has been reported that HEAs possess many attractive properties, such as high hardness [3][4][5][6][7], outstanding wear resistance [8,9], good fatigue resistance characteristics [10], excellent high-temperature strength [11,12], good thermal stability [13] and, in general, good oxidation [8] and corrosion resistance [14,15]. These properties suggest great potential in a wide variety of applications.…”

Section: Introductionmentioning

confidence: 99%

Physical Properties of High Entropy Alloys

Tsai

2013

Entropy

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“…This is because the frictional heating increases the temperature of the wear surface during the wear process. According to existing research results [39], the transient temperature of real contact areas of the wear process may be higher than 800 °C. This can promote the formation of oxide on the surface of the cladding layer.…”

Section: Wear Resistancementioning

confidence: 99%

Effect of Cobalt on Microstructure and Wear Resistance of Ni-Based Alloy Coating Fabricated by Laser Cladding

Wang

Chang

Liu

et al. 2017

Metals

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Abstract:Ni-based alloy powders with different contents of cobalt (Co) have been deposited on a 42CrMo steel substrate surface using a fiber laser. The effects of Co content on the microstructure, composition, hardness, and wear properties of the claddings were studied by scanning electron microscopy (SEM), an electron probe microanalyzer (EPMA), X-ray diffraction (XRD), a hardness tester, and a wear tester. The results show that the phases in the cladding layers are mainly γ, M 7 (C, B) 3 , M 23 (C, B) 6 , and M 2 B. With the increase in Co content, the amounts of M 7 (C, B) 3 , M 23 (C, B) 6 , and M 2 B gradually decrease, and the width of the eutectic structure in the cladding layer also gradually decreases. The microhardness decreases but the wear resistance of the cladding layer gradually improves with the increase of Co content. The wear resistance of the NiCo30 cladding layer is 3.6 times that of the NiCo00 cladding layer. With the increase of Co content, the wear mechanism of the cladding layer is changed from abrasive wear to adhesive wear.

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Microstructure and wear behavior of AlxCo1.5CrFeNi1.5Tiy high-entropy alloys

Cited by 1,230 publications

References 43 publications

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

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

Physical Properties of High Entropy Alloys

Effect of Cobalt on Microstructure and Wear Resistance of Ni-Based Alloy Coating Fabricated by Laser Cladding

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