Controlling the corrosion resistance of multi-principal element alloys

Scully, John R.; Inman, Samuel B.; Gerard, Angela Y.; Taylor, Christopher D.; Windl, Wolfgang; Schreiber, Daniel K.; Lü, Ping; Saal, James E.; Frankel, G. S.

doi:10.1016/j.scriptamat.2020.06.065

Cited by 82 publications

(34 citation statements)

References 40 publications

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“…Hence, the passive film composition is critical for achieving stable surfaces. This is in line with the study by Scully et al 54 , which highlighted the importance of the passive film to obtain corrosion-resistant HEAs. However, other aspects that must be taken into account to develop corrosion resistant HEAs, as also highlighted by Scully et al, such as phase stability, substrate properties (metal-metal bonds), and structural heterogeneities.…”

Section: Acidic Solutionssupporting

confidence: 92%

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A review on Corrosion of High Entropy Alloys: Exploring the Interplay Between Corrosion Properties, Alloy Composition, Passive Film Stability and Materials Selection

et al. 2022

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The corrosion resistance of high entropy alloys was reviewed in the present work. The main focus was to explore the correlation between alloy composition, passive film stability and corrosion properties and use this information to develop a materials selection procedure based on the Ashby approach. Corrosion current densities and pitting potentials were the main design parameters used to rank different alloys, based on a careful examination of data published in the literature, considering uniform and localized corrosion, respectively. The outputs of the selection process clearly indicated a strong dependence of the corrosion resistance on passive film stability, although microstructural homogeneity and uniform distribution of alloying elements should not be disregarded. Proper combinations of elements such as Co, Al, Ti, Mo and Cr, especially, are effective at enhancing the corrosion resistance of high entropy alloys.

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Section: Acidic Solutionssupporting

confidence: 92%

“…Scully et al 54 gave an excellent overview to drive the development of corrosion resistant multi-principal alloys. The importance of selecting alloying elements that enable the formation of protective oxide films was highlighted.…”

Section: Alloy Composition and Passive Film Stabilitymentioning

confidence: 99%

A review on Corrosion of High Entropy Alloys: Exploring the Interplay Between Corrosion Properties, Alloy Composition, Passive Film Stability and Materials Selection

et al. 2022

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“…Therefore, the maximum element concentration may be higher than 35 percent. HEAs can also be called compositionally complex alloys, multi-component alloys, or multi-principal element alloys, and these names are interchangeably used [ 12 , 61 , 62 , 63 ]. However, the most widely used name is HEAs.…”

Section: Heas’ Development and Weldability: A Historical Perspectivementioning

confidence: 99%

Welding Techniques for High Entropy Alloys: Processes, Properties, Characterization, and Challenges

et al. 2022

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High entropy alloys (HEAs) are the outstanding innovations in materials science and engineering in the early 21st century. HEAs consist of multiple elements with equiatomic or near equiatomic compositions, which exhibit superior mechanical properties, such as wear resistance, fatigue resistance, and corrosion resistance. HEAs are primarily used in structural and functional applications; hence, appropriate welding processes are essential to enhancing the performances and service lives of HEA components. Herein, a comprehensive overview of current state-of-art-of welding techniques for HEAs is elucidated. More specifically, the article discusses the fusion-based welding techniques, such as gas tungsten arc welding (GTAW) and laser beam welding (LBW), and solid-state welding techniques, such as friction stir welding (FSW) and explosive welding (EB), for a broad category of HEAs. In addition, the microstructural features and mechanical properties of HEAs welded using different techniques were explained for a broad spectrum of HEAs. Finally, this review discusses potential challenges in the welding of HEAs.

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“…There are several aspects of the corrosion of MPEAs that are as yet not understood. 386 Passivating elements such as Cr are known to enrich in the protective oxide surface films that are responsible for the low corrosion rate of CRAs. 387 Other elements are thought to alter the dissolution kinetics.…”

Section: Corrosion and Design Of Multiple Principal Element Alloysmentioning

confidence: 99%

Recent Advances in Corrosion Science Applicable To Disposal of High-Level Nuclear Waste

et al. 2021

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High-level radioactive waste is accumulating at temporary storage locations around the world and will eventually be placed in deep geological repositories. The waste forms and containers will be constructed from glass, crystalline ceramic, and metallic materials, which will eventually come into contact with water, considering that the period of performance required to allow sufficient decay of dangerous radionuclides is on the order of 105–106 years. Corrosion of the containers and waste forms in the aqueous repository environment is therefore a concern. This Review describes the recent advances of the field of materials corrosion that are relevant to fundamental materials science issues associated with the long-term performance assessment and the design of materials with improved performance, where performance is defined as resistance to aqueous corrosion. Glass, crystalline ceramics, and metals are discussed separately, and the near-field interactions of these different material classes are also briefly addressed. Finally, recommendations for future directions of study are provided.

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Controlling the corrosion resistance of multi-principal element alloys

Cited by 82 publications

References 40 publications

A review on Corrosion of High Entropy Alloys: Exploring the Interplay Between Corrosion Properties, Alloy Composition, Passive Film Stability and Materials Selection

A review on Corrosion of High Entropy Alloys: Exploring the Interplay Between Corrosion Properties, Alloy Composition, Passive Film Stability and Materials Selection

Welding Techniques for High Entropy Alloys: Processes, Properties, Characterization, and Challenges

Recent Advances in Corrosion Science Applicable To Disposal of High-Level Nuclear Waste

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