Effect of thermally induced B2 phase on the corrosion behavior of an Al0.3CoCrFeNi high entropy alloy

Shi, Zhun; Wang, Z.B.; Wang, X.D.; Zhang, S.; Zheng, Yuan

doi:10.1016/j.jallcom.2022.163886

Cited by 47 publications

(6 citation statements)

References 52 publications

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“…The excessive addition of Mo in FeCoCrNiMo x HEA leads to the formation of enriched Cr–Mo phases and makes the matrix poor in Cr and Mo, thus FeCoCrNiMo x HEA with excessive Mo is susceptible to localized corrosion. [ 15 ] Similar behaviors were reported in Al 0.3 CoCrFeNi and CoCuFeNiMnTi x HEAs, [ 16,17 ] where the corrosion resistance of Al 0.3 CoCrFeNi and CoCuFeNiMnTi x alloys was decreased due to the formation of (Al, Ni)‐rich phase and Cr‐poor B2 phase in Al 0.3 CoCrFeNi HEA and Ti‐rich regions in CoCuFeNiMnTi x HEA. Shuang et al [ 18 ] prepared a nanostructured eutectic FeCrNiCoNb 0.5 HEA that overcomes the shortcomings of multiphase alloys and exhibits excellent corrosion resistance in a solution of sodium chloride.…”

Section: Introductionsupporting

confidence: 61%

A Comparative Study on Corrosion Behaviors of Fe35Mn10Cr20Ni35 High‐Entropy Alloy and 304 Stainless Steel in Sulfuric Acid Aqueous Solution

Zhou

Jiang²,

Liao

et al. 2022

Adv Eng Mater

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Herein, the corrosion behaviors of Fe35Mn10Cr20Ni35 high‐entropy alloy (HEA) and commercial 304 stainless steel (304 SS) in 0.5 M H2SO4 aqueous solutions are evaluated. Potentiodynamic polarization test results indicate that both the prepared HEA and 304 SS possess a large passive interval, illustrating that they have a strong capability to form passive films. The prepared HEA possesses higher corrosion potentials and lower corrosion current densities than that of 304 SS, thus it has more superior corrosion resistance. The electrochemical impedance spectroscopy and electrical equivalent circuits results indicate that the charge‐transfer resistance of HEA is higher than that of 304 SS and the passive films of the prepared HEA is thicker than that of 304 SS. These indicate that the passive film on the prepared HEA has an excellent protective ability to prevent further corrosion. X‐Ray photoelectron spectroscopy results indicate that the passive film of the prepared HEA samples is mainly composed of compacted metal oxides, especially Cr2O3‐dense oxides, while the passive film of 304 SS is mainly composed of loose hydroxides and compacted metal oxides. That is the key reason why the prepared HEA has better corrosion resistance than 304 SS.

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Section: Introductionsupporting

confidence: 61%

A Comparative Study on Corrosion Behaviors of Fe35Mn10Cr20Ni35 High‐Entropy Alloy and 304 Stainless Steel in Sulfuric Acid Aqueous Solution

Zhou

Jiang²,

Liao

et al. 2022

Adv Eng Mater

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“…The mass loss of the untreated and LSMed samples in deionised water is 35 ± 1 and 14 ± 0.3 mg, whereas the mass loss in 3.5 wt% NaCl solution is 40 ± 0.6 and 20 ± 0.3 mg after 8-h CE, respectively. The mean depth of erosion ( MDE ) and the mean depth of erosion rate ( MDER ) can be used to evaluate CE resistance and calculated as follows: 3–57 where Δw is the mass loss (mg), ρ is the density of the materials (g/cm 3 ), s is the eroded area (1 cm 2 in this study), Δ T is the interval time (h), MDE in μm and MDER in μm/h. The CE resistance R e (h μm −1 ) is the reciprocal of MDER.…”

Section: Resultsmentioning

confidence: 99%

“…It is believed that CE damage mainly results from repeated attack of stress pulses generated in collapsing of bubbles near the solid–liquid interface in the form of micro-jets or shock waves. 6 It is found that the velocity of such micro-jets can be up to approximately 700 m/s, 7 and the pressure of subsequent shockwaves can exceed 1–1.5 GPa, 8,9 exerting intense pressure on materials surface and leading to the material flake-off from the surface. 304 stainless steels display great potential in engineering applications such as pumps, turbines, compressor components, steam and water valves as they possess combination of corrosion resistance and strength.…”

Section: Introductionmentioning

confidence: 99%

Iso-material manufacturing of 304 stainless steel: Microstructure, corrosion-cavitation erosion synergistic behaviour

Cao,

Wu,

Wang

et al. 2024

Materials Science and Technology

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Different from additive or subtractive manufacturing, iso-material manufacturing (also named isovolumetric manufacturing) was proposed in this work by laser surface melting (LSM), aiming at enhancing resistance to corrosion and cavitation erosion (CE) of 304 stainless steel. Experimental results showed that partial austenite transformed into martensite after LSM. The corrosion resistance of LSMed sample was improved. LSMed sample exhibited enhanced CE resistance, and was 2.5 and 2 times that of untreated sample in deionised water and 3.5 wt% NaCl solution, respectively. The passivation film for LSMed sample exhibited a high re-passive and self-repairing ability of passivation film. LSMed sample in this study exhibits a high or comparable corrosion and CE resistance in comparison with samples prepared by other fabrication method reported previously.

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“…The effects of B2 phases on pitting corrosion have been clarified by purposely controlling its precipitation using annealing at different temperatures. [ 77 ] When increasing the content of B2 phases, E pit and R p (polarization resistance) decrease while i corr increases. Hence, the deterioration must be attributed to the formation of B2 phases.…”

Section: Corrosion‐resistant Heamentioning

confidence: 99%

“…The effects of B2 phases on pitting corrosion have been clarified by purposely controlling its precipitation using annealing at different temperatures. [77] When increasing the content of B2 phases, E pit and R p [57] Copyright 2017, Elsevier.…”

Section: Phase Compositionmentioning

confidence: 99%

Corrosion‐Resistant Biomedical High‐Entropy Alloys: A Review

Shi,

Fang,

Liaw

et al. 2023

Adv Eng Mater

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High entropy alloys (HEAs) exhibit the outstanding properties, such as excellent antibacterial property, remarkable biocompatibility, and superior corrosion resistance, in the field of biomedical applications. Herein, we summarize the biomedical function of HEAs in aspects of the antibacterial behavior against planktonic gram‐negative/gram‐positive bacteria and biofilms, the biocompatibility inspired by low‐ cytotoxicity alloying elements. Considering the corrosive service environment of biomedical device, the corrosion behavior and mechanism are discussed in terms of alloying elements (Al, Ni, Cr, and Cu) and microstructure (phase composition and grain size). Additionally, the promising approaches to simultaneously achieve biomedical function and corrosion resistance, the possible application of additive manufacturing, and the prospective effects of short‐range orderings on the corrosion resistance are simply discussed.This article is protected by copyright. All rights reserved.

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Effect of thermally induced B2 phase on the corrosion behavior of an Al0.3CoCrFeNi high entropy alloy

Cited by 47 publications

References 52 publications

A Comparative Study on Corrosion Behaviors of Fe35Mn10Cr20Ni35 High‐Entropy Alloy and 304 Stainless Steel in Sulfuric Acid Aqueous Solution

A Comparative Study on Corrosion Behaviors of Fe35Mn10Cr20Ni35 High‐Entropy Alloy and 304 Stainless Steel in Sulfuric Acid Aqueous Solution

Iso-material manufacturing of 304 stainless steel: Microstructure, corrosion-cavitation erosion synergistic behaviour

Corrosion‐Resistant Biomedical High‐Entropy Alloys: A Review

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