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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Environmental Degradation of Multiple Principal Component Materials
Presentation Title Oxidation of Different High Entropy Alloys Under the Influence of Water Vapour
Author(s) Mary-Lee Brückner, Lukas Mengis, Emma White, Mathias C. Galetz
On-Site Speaker (Planned) Mathias C. Galetz
Abstract Scope Multi-Principal Element Alloys (MPEAs) have drawn a lot of scientific attention recently due to their unique, sometimes record-breaking, properties. In this work, the oxidation behavior of FeCoCrNiMn with small modifications, exchanging Mn for Al, Cu, and Al + Cu was investigated between 600 - 800 °C in synthetic air, as well as in synthetic air + 10 vol.% H2O. Across all compositions substitution of Mn leads to a significant improvement in oxidation resistance. For FeCoCrNiCu, a local attack of Cu-rich phases was observed along with internal Cr2O3. This selective oxidation was inhibited by the addition of Al, which formed a protective Al2O3 layer in all compositions. FeCoCrNiAl formed different types of Al2O3 (α-Al2O3 and θ-Al2O3), while FeCoCrNiCuAl only exhibits corundum. Several effects of water vapor are also noted such as needle-like surface structures or an impact on observed nitridation.
Proceedings Inclusion? Planned:
Keywords High-Entropy Alloys, High-Temperature Materials, Environmental Effects


B-1: Evaluating the Influences of Microstructural Attributes on the High Temperature Oxidation of a AlCoCrFeNi High Entropy Alloy
Computational Investigation of the Trends that Govern the Coefficient of Thermal Expansion in Rare-earth Silicates
Corrosion Interactions between a Candidate Hollandite Waste Form and Stainless Steel
Corrosion Resistance of Al-Cr-Ti Containing Compositionally Complex Alloys
Development of a New Aluminum Dissolvable Alloy for Hydraulic Fracturing Applications
Dynamic and Chemical Processes Associated with Deposit-induced Corrosion Testing at Elevated Temperatures
Enhanced Oxidation Resistance of (Mo95W5)85Ta10(TiZr)5 Refractory Multi-principal Element Alloy up to 1300°C
Equivalent Hydrogen Fugacity during Electrochemical Charging of Nickel Single Crystal: Comparison with Gaseous Hydrogen Charging
Experimental and Numerical Assessment of the Corrosion Behavior of a Friction Stir Processed Equiatomic CrMnFeCoNi High Entropy Alloy in a Neutral Environment
Exploring Hydrogen-induced Martensitic Transformation and Twinning Effects Metastable Fe-Mn-Co-Cr High Entropy Alloys
Exploring Untapped Potential in High Entropy Alloys: Combinatorial Exploration in Corrosive Environments
Hydrogen Embrittlement Behavior of Face-centered Cubic High-entropy Alloys
Investigation of Low Temperature Oxidation Behavior of MoNbTaW Thin Films
Joining of FeCrAl Based Alloys for Lead Cooled Fast Reactor Applications
Localized Corrosion Resistance of Ni-Cr-Co-Fe-Mo MPE Alloys in Aqueous and Methanolic Environments
Machine Learning Potential for High Entropy Alloys
Microstructure and Corrosion of Multi-phase Ni-Fe-Cr-Mo-W-X Multi-principal Element Alloys
Modeling and Design of CoCrFeNi Multi-principle Element Alloys on Their Aqueous Corrosion Resistance via First Principle Calculations
Modeling Preferential Dissolution during Aqeous Corrosion of Multi-principal Element Alloys
NOW ON-DEMAND ONLY – Interpretable Machine Learning to Understand Corrosion in Complex Compositional Alloys
Optimization of Multicomponent Rare Earth Silicate Environmental Barrier Coating Properties
Oxidation of Different High Entropy Alloys Under the Influence of Water Vapour
Oxygen Modulation of Miscibility and Ordering in BCC Nb-Ti-Zr Alloys
The Tribocorrosion Behaviors of Al0.1CrCoFeNi Multi-principal Element Alloys in Different pH Conditions

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