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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Environmental Degradation of Multiple Principal Component Materials
Presentation Title Enhanced Oxidation Resistance of (Mo95W5)85Ta10(TiZr)5 Refractory Multi-principal Element Alloy up to 1300C
Author(s) Ranran Su, Hongliang Zhang, Gaoyuan Ouyang, Longfei Liu, Jun Cui, Duane D. Johnson, John H. Perepezko
On-Site Speaker (Planned) Ranran Su
Abstract Scope Refractory-metal-based alloys are a potential replacement for current nickel-based superalloys due to their excellent mechanical strength at extremely high temperatures. However, severe oxidation in a high-temperature working environment limits their application. To address this challenge, a two-step coating process (including a Mo precoat and a Si-B pack cementation) was applied to an innovative refractory multi-principal element alloy (RMPEA) (Mo95W5)85Ta10(TiZr)5. The coating is composed of an aluminoborosilica glass layer on top of an RMPEA-Si-B multilayered structure. The coating effectively protects the RMPEA from oxidation in high-temperature environments, as demonstrated by phase-stable operation at 10-20% higher temperatures over state-of-the-art systems without any forced-cooling system. This two-step Mo-Si-B coating method can be adapted to provide environmental resistance to a wide range of RMPEA.
Proceedings Inclusion? Planned:
Keywords Surface Modification and Coatings, High-Temperature Materials,


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 1300C
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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