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Meeting 2021 TMS Annual Meeting & Exhibition
Symposium Materials for High Temperature Applications: Next Generation Superalloys and Beyond
Presentation Title On the High-temperature Air Oxidation Behavior of Ti3Al0.6Ga0.4C2 MAX Phase Solid-solution in the 1000 to 1300 °C Temperature Range
Author(s) Tarek Ali Ali, Enrica Epifano, Maxim Sokol, Michel Barsoum
On-Site Speaker (Planned) Tarek Ali Ali
Abstract Scope The MAX phases, Ti2AlC and Ti3AlC2, are atomically layered ternary transition metal carbides that display damage tolerance, oxidation resistance and crack-healing behavior at high temperatures. They are recognized as alumina Al2O3 formers upon oxidation in the 1000-1200°C temperature range. However, the challenge of TiO2 formation and consequent transformation into a non-protective Al2TiO5 film at higher temperatures, has encouraged further research. In this work, bulk dense predominantly single phase Ti3Al1-xGaxC2 (x ≈ 0.4) quaternary solid-solution MAX phase was hot-pressed and its isothermal oxidation was explored in ambient air, at 1000-1300°C, for 15-300 h. At 1000°C, dense adherent alumina scale forms, with superior oxidation resistance compared to Ti3AlC2 and even Ti2AlC. At 1200°C, the scale becomes coarser with oxidation resistance approaching that of Ti3AlC2 ternary. At 1300°C, alumina scale wrinkling is observed, affecting overall integrity of the oxide scale. Moreover, nucleation of anisotropic Al2TiO5 leads to formation of underlying pores and microcracks.
Proceedings Inclusion? Planned:
Keywords Ceramics, High-Temperature Materials, Titanium

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Review of Plastic Flow and Microstructure Evolution at Elevated-temperatures in Unalloyed Niobium
Accelerated Design of γ′-strengthened Co-base Superalloys with Improved Comprehensive Performances
Advanced Refractory Alloys for Use at Temperatures above 1273K
Beyond Superalloys: An Efficient Strategy for Assessing Environmental Resistance
Compositionally Graded Nanosize Precipitates at Grain Boundaries of Directionally Solidified Nickel Based (GTD444) Superalloy
Concomitant Oxidation-diffusion-creep Processes for Stress Generation and Its Effects in Cyclic Oxidation Behavior
Considerations for Manufacturability and Repairability of Next Generation High Temperature Alloys
Crack Initiation Anisotropy of Ni-based Single-crystal Superalloys in the VHCF Regime
Creep Deformation Behavior of Ni - 33 Co Alloy
Creep Testing of Molybdenum
Damage Mechanisms Involved during Very High Cycle Fatigue of a Coated and Grit-blasted Ni-based Single-crystal Superalloy
Deformation of the γ’’’-Ni2(Cr, Mo, W) Phase during Mechanical Testing
Development of Refractory Metal ‘BCC-superalloys’ Reinforced by Ordered-BCC Intermetallic Precipitates
Direct Production of Complex Metallic Alloys
Early Stage Oxidation of Ni- and Co-based Superalloys: Novel Insights from Rapid Thermal Annealing (RTA) Experiments
Effect of Al Addition on the Oxidation Behavior of a Mo-Si-B Alloy
Effect of Alloy Composition on the Microstructure of Developmental Iridium Alloys
Effect of Processing Parameters on Molybdenum Weld Microstructures
Effect of Water Species on Formation of Cationic Defects in Yttria-stabilized-Zirconia (YSZ)
Effects of Key Elements Ni, Cr and W on High-temperature Microstructural Stability of Multicomponent Co-base Superalloys
Enhancing the Creep Performance of a Corrosion Resistant Ni-based Superalloy through Grain Boundary Design
Enhancing the Creep Strength of Next Generation Disk Superalloys via Local Phase Transformation Strengthening
Experimentally Determined Creep Properties of Various Alloys and Conclusions for Beyond Nickel-based Superalloys
Feasibility of Near-net-shape HIP Fabrication and PM/Wrought Weld in Alloy IN740H for AUSC Components
High-temperature, Thermally-cyclable, Reaction-formed, Co-continuous Refractory Metal/Ceramic Composites for Extreme Environments
Hot Isostatic Pressing of Niobium-based Refractory Alloy Powders
ICME-guided Design of Novel Metal Matrix Composites for Extreme Environments
Introductory Comments: Materials for High Temperature Applications-Next Generation Superalloys and Beyond
Inverse Design of Chemistry of High Temperature Ni-base Superalloys Using CALPHAD and Machine Learning
Kinetics of Grain Boundary Segregation in an Ir Alloy*
Low Cycle Fatigue of Single Crystal Co- and CoNi-base Superalloys: The Role of Oxidation Resistance
Mechanical Properties and Microstructural Characterization of Cast Haynes 282 for Advanced Ultra-supercritical (A-USC) Applications
Metallic Materials Beyond Nickel-base Superalloys: The Challenges and Potential
Microstructural Evolution under Complex Stress States during Creep of Single Crystal Ni-base Superalloy CMSX-4
Microstructure and Mechanical Properties of a Centrifugal Cast Ni-Based Alloy
Modeling Planar Fault Energies in Ordered D022 Structures
New Tools for Analysis of Microplasticity in BCC Refractory Metals
Next Generation Superalloys and beyond for Aircraft Engine Applications
Observation of Multiply Coherent Grains in Ni-Based Superalloy LSHR
On the Crack Growth Retardation under Dwell-fatigue in Nickel Disc Alloys
On the Early Stages of Gamma’ Evolution in a Model Ni-based Alloy
On the High-temperature Air Oxidation Behavior of Ti3Al0.6Ga0.4C2 MAX Phase Solid-solution in the 1000 to 1300 °C Temperature Range
On the Quantitative Characterization of Weld Microstructures
Oxidation-resistant, Thermally-cyclable, Robust Oxide/Metal Composite Materials for Concentrated Solar Power
Oxidation Behavior of Nb-Si Based Ultrahigh Temperature Alloy at 600-1350℃
Oxidation of TiAl Alloys GE 4822 and TNM-B1 between 600°C and 900°C and Impact on Mechanical Properties
Partitioning of Cu and Si Contaminants in a Ni-based Superalloy and their Effect on Creep Properties
Paving the Way Beyond Ni-based Superalloys: Role of Coupled Thermodynamic-kinetic Models
Quantifying Deformation Processes Resulting in Local Phase Transformation Strengthening
Rapid Design of Refractory Multi-principal Element Alloys for High-T Structural Applications: Theory-guided Combinatorial Synthesis and Characterization Approach
Rapid Screening, Machine Learning, and Multi-objective Optimization for Refractory Alloy Development
Reference-free Potential Development for Metal-rich Carbides
Residual Stress with High Temperature Oxidation of Ni-based Haynes 282 Superalloy
Segregation-assisted Climb of Frank Partial Dislocations: A Novel Planar Fault Formation Mechanism in L12-hardened Superalloys
Solute Segregation at Intrinsic Stacking Faults in Disordered Face-centered Cubic Ni-Co Solid Solution: First-principles and Thermodynamic Modeling
Synchrotron X-Ray Scattering Characterization of Strengthening Precipitates in a Model Ni-based Alloy
The Creep Performance of Pesting-Resistant Mo-Si-Ti Alloys
TROPEA: A Platinum Containing New Generation Nickel-based Superalloy for Single Crystalline Applications
Understanding the Effects of Alloy Chemistry and Microstructure on the Stress Relaxation Behavior of High Strength Ni-base Superalloys
Understanding the High-temperature Fatigue Properties of the Novel Fe-Ni-Cr Based Superalloy
Understanding the Oxidation Mechanisms of Complex Concentrated Refractory-based Alloys

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