Oxidation and Corrosion resistance of AlCoCrFeTiHigh Entropy Alloy

Raphel, Arun; Kumaran, S.; Kumar, K.V. Pradeep; Varghese, Lovin

doi:10.1016/j.matpr.2017.01.013

Cited by 26 publications

(4 citation statements)

References 17 publications

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“…The behaviour in the HEA-based cermet is three times superior. Similar behaviour can be found in [54] wherein in addition to the electrochemical corrosion, oxidation was studied. A unique study on a refractory HEA (C7 cluster) made by additive manufacturing can be found in [171].…”

Section: Special Properties Of Pm Heassupporting

confidence: 79%

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High-entropy alloys fabricated via powder metallurgy. A critical review

2019

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High-entropy alloys (HEAs) have attracted a great deal of interest over the last 14 years. One reason for this level of interest is related to these alloys breaking the alloying principles that have been applied for many centuries. Thus, HEAs usually possess a single phase (contrary to expectations according to the composition of the alloy) and exhibit a high level of performance in different properties related to many developing areas in industry. Despite this significant interest, most HEAs have been developed via ingot metallurgy. More recently, powder metallurgy (PM) has appeared as an interesting alternative for further developing this family of alloys to possibly widen the field of nanostructures in HEAs and improve some capabilities of these alloys. In this paper, PM methods applied to HEAs are reviewed, and some possible ways to develop the use of powders as raw materials are introduced.

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Section: Special Properties Of Pm Heassupporting

confidence: 79%

“…Considering the HEAs in [32,52,54,104], all of them belong to compositional clusters C1 and C2 made by conventional PM. Electrochemical corrosion is tested through potentiodynamic polarisation curves, and better performance than that of stainless steel 304 was observed in all of these works.…”

Section: Corrosion and Oxidationmentioning

confidence: 99%

High-entropy alloys fabricated via powder metallurgy. A critical review

2019

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“…Consequently, this transformation yields a superior ZT of 0.84 at 573 K. 260 Recently, they incorporated Ag with different concentrations (0-0.9 at%) into a nanocrystalline lead tin tellurium selenium (PbSnTeSe). 261 They combined the entropydriven concept, band engineering, and nanostructuring techniques, resulting in a significant reduction in k, achieving an exceptionally low value of 0.814 W m À1 K À1 . This reduction leads to a substantial enhancement in the PF, reaching 14.16 Â 10 À4 W m À1 K À2 and a remarkable ZT of 0.891 at 573 K for the nanostructured PbSnTeSe-0.9Ag HEM, representing a remarkable 225% improvement compared to the pristine PbSnTeSe HEA.…”

Section: High-entropy Metal Chalcogenidesmentioning

confidence: 99%

“…This reduction leads to a substantial enhancement in the PF, reaching 14.16 Â 10 À4 W m À1 K À2 and a remarkable ZT of 0.891 at 573 K for the nanostructured PbSnTeSe-0.9Ag HEM, representing a remarkable 225% improvement compared to the pristine PbSnTeSe HEA. 261 Xin et al 262 also applied the entropy-driven concept on the (Pb, Sn)(Se, Te) system. They found a ZT value of 0.85 at 773 K for the Sn 0.61 Mn 0.09 Pb 0.3 Te 0.7 Se 0.3 HEM, which has increased 113% compared to that of the original SnTe-based TE material, accompanied by an ultralow k l of 0.48 W cm À1 K À1 at 773 K, which has been obtained via the phonon scattering of the configurational entropy.…”

Section: High-entropy Metal Chalcogenidesmentioning

confidence: 99%