A low-cost, low-density and corrosion resistant compositionally complex alloy: AlFeMnSi

O’Brien, Sean M.; Esteves, Luiza; Birbilis, Nick; Gupta, Rajeev

doi:10.1149/osf.io/ew86m

Cited by 4 publications

(4 citation statements)

References 15 publications

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“…Using these design strategies, many cost-effective HEAs have been developed. For instance, the Co-free HEAs with relatively lower cost include the equiatomic FeMnCrNi, AlCrFeNi [24], FeCrNiMnCu [25], NiMnFeCu [26], AlFeMnSi [27] and FeCrNiTiAl [28] alloys. But these alloy systems are equiatomic or near-equiatomic, there is less potency for further exploitation of the new alloys with better performance.…”

Section: Alloy Design Strategymentioning

confidence: 99%

Cost-Effective Fe-Rich High-Entropy Alloys: A Brief Review

Yin¹,

Atrens²,

Huang³

et al. 2023

High Entropy Materials - Microstructures and Properties

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High-entropy alloys (HEAs) have attracted increased attention due to their extraordinary properties. However, the multicomponent characteristic of equiatomic HEAs inevitably leads to high material costs, which thus limits their widespread industrial applications. Although HEAs are claimed to be suitable for applications in extreme environment due to their comprehensive properties, the actual properties of HEAs dramatically vary with compositions and processes. Therefore, the development of cost-effective HEAs with comprehensive properties is indispensable for industrial uses. Till now, although comprehensive review papers on HEAs are available, few works focused on the cost-effectiveness of HEAs, particularly Fe-rich HEAs recently developed. This review thus aims to fill this gap by reviewing the current research progress in Fe-rich HEAs with a focus on the composition design, microstructure, and properties, including mechanical properties, and resistances for oxidation, wear, and corrosion. The challenges for applying cost-effective Fe-rich HEAs into industries are also arising as future research topics.

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Section: Alloy Design Strategymentioning

confidence: 99%

Cost-Effective Fe-Rich High-Entropy Alloys: A Brief Review

Yin¹,

Atrens²,

Huang³

et al. 2023

High Entropy Materials - Microstructures and Properties

View full text Add to dashboard Cite

show abstract

“…3a and b, respectively. A representative section from the central radius of the samples of size 70 × 70 µm 2 were tested with the NanoBlitz 3D method. The testing was performed using a grid of 19 × 19 indentations producing a total of 361 indentations, enabling the property maps given in Fig.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

“…High-entropy alloys (HEAs) are a relatively new category of metallic materials that have attracted significant attention over recent years due to the favourable combination of high strength, hardness, corrosion and wear resistance properties that they offer [1][2][3]. These properties are attributed to the high-entropy, lattice distortion, sluggish diffusion and cocktail effects of the alloys [4].…”

Section: Introductionmentioning

confidence: 99%

Computational and Experimental Investigation of the Strain Rate Sensitivity of Small Punch Testing of the High-Entropy Alloy Cocrfemnni

et al. 2022

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“…As such, the corrosion performance of MPEAs has also received wide attention. [23][24][25][26][27][28][29][30][31][32][33][34][35][36][37] Elements such as chromium, along with molybdenum and tungsten have traditionally imparted enhanced corrosion resistance to base elements such as Fe and Ni. The exact mechanisms by which they act might vary, but the consensus is that inclusion of certain levels of Cr, Mo, and W typically improves the corrosion resistance of the alloy.…”

mentioning

confidence: 99%

Corrosion of Ni-Fe-Cr-Mo-W-X Multi-Principal Element Alloys

Panindre

Khalifa

Taylor

et al. 2021

J. Electrochem. Soc.

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An extraordinarily corrosion-resistant non-equimolar high entropy alloy with the composition Ni38Fe20Cr21Mo6W2Ru13 (referred to here as MPEA1) has been reported. Ruthenium is one important reason why the alloy exhibits excellent passivity and resistance to localized corrosion in a variety of environments. The goal of this study was to replace Ru in MPEA1 with commodity elements such as Mn, Al and Cu while minimizing the penalty on corrosion performance. Thermodynamic calculations were performed to survey the phase diagram for a stable disordered face centered cubic (fcc) phase at elevated temperatures. Five test compositions analogous to MPEA1 were conceptualized based on this design strategy. In two of these candidate alloys, the Ru content was substituted wholly by additional Fe or Ni. The other three contain Mn, Al, or Cu, respectively. Corrosion performance and passive behavior of these alloys in 0.6 M NaCl and 6 M HCl were evaluated using cyclic potentiodynamic polarization and single-frequency impedance experiments. Solutionized forms of all five alloys were found to resist localized corrosion in 0.6 M NaCl. Despite forming oxide films of similar thickness in 0.6 M NaCl solutions, X-ray photoelectron spectroscopy revealed non-congruent dissolution of constituent elements. The role of alloying elements in influencing the oxide formation process was indicated.

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A low-cost, low-density and corrosion resistant compositionally complex alloy: AlFeMnSi

Cited by 4 publications

References 15 publications

Cost-Effective Fe-Rich High-Entropy Alloys: A Brief Review

Cost-Effective Fe-Rich High-Entropy Alloys: A Brief Review

Computational and Experimental Investigation of the Strain Rate Sensitivity of Small Punch Testing of the High-Entropy Alloy Cocrfemnni

Corrosion of Ni-Fe-Cr-Mo-W-X Multi-Principal Element Alloys

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