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Meeting MS&T22: Materials Science & Technology
Symposium Alloy Phase Transformations at Elevated Temperatures
Presentation Title Phase Stability in Cast and Additively Manufactured Al-9 wt%Cu-6 wt%Ce Alloy
Author(s) Alice E. Perrin, Sumit Bahl, Donovan Leonard, Alex Plotkowski, Amit Shyam, Ryan DeHoff, Ying Yang
On-Site Speaker (Planned) Alice E. Perrin
Abstract Scope Additive manufactured (AM) eutectic Al alloy systems have been studied extensively for advantageous thermal and mechanical properties due to the interesting and refined microstructures and Al-Cu-Ce alloys has been identified as a promising system of study. Phase identification of the microstructure of AM Al-Cu-Ce has revealed the Al8Cu3Ce phase, a phase which was not previously included on simulated or experimental phase diagrams of the cast Al-Cu-Ce system, prompting additional thermodynamic modelling of the system. These models were experimentally validated with cast Al-Cu-Ce alloys. We found that despite the refined microstructure of the AM alloys, the phases formed were consistent with the cast samples, suggesting that AM processing does not significantly affect the formation and stability of phases compared with traditional casting. These results have resolves inconsistent previous descriptions of the Al-Cu-Ce ternary phase diagram in the Al-rich region.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Additive Manufacturing Design of Metal Matrix Composites of Stainless Steel 316 and Inconel 718
Alternate Phase Transformation Paths in a Nb-50Ti Alloy in the Presence of Oxygen Interstitials
Develop Precipitation-Strengthened Refractory High Entropy Alloys for Turbine Blades Applications above 1300 Degree Celsius
E-1: Multiscale Modeling of Solidification Processes for Metal & Alloys
Effect of Grain Boundary Phases on Creep Properties of a Novel Ni-Co Based Superalloy
Examining the Influence of Nitride Precipitation on the Performance of Additively Manufactured Nickel Superalloys
Hyper Duplex Stainless Steel: A Study on the Sigma Phase Formation
Impact of Manufacturing Processes on Phase Transformations in High-temperature Alloys: Some Thoughts Based on Representative Case Studies
In-situ Neutron Characterization of Thermomagnetic Processes Utilizing Direct Induction Heating
Metallic Alloy Microstructure Prediction and Control with Processing
Microstructure and Mechanical Properties of W-free γ + γ' Co-based Superalloys with Ni, Cr, and Fe Additions
Microstructure Evolution and Mechanical Properties of α′/α″-Strengthened Ferritic Superalloys
On the Shapes of Time-Temperature-Transformation Curves across Alloys and Reactions
Phase Stability in Cast and Additively Manufactured Al-9 wt%Cu-6 wt%Ce Alloy
Precipitation Strengthening in BCC Al2.7CrMnTiV High-Entropy Alloys
Precursor Metastable Phases and Their Influence on α Precipitation in the Metastable β-titanium Alloy, Ti-5Al-5Mo-5V-3Cr
Single-step Aging Treatment on Cast Haynes 282 Ni-based Alloy – Microstructure and Mechanical Behavior
Solidification Modelling With CALPHAD: Process Applications of Equilibrium and Non-equilibrium Models and When to Use Them
Study of Thermal Decomposition of γ’-Fe4N Using Molecular Dynamics Simulation
The Optimization of Local Phase Transformation Strengthening in Next Generation Superalloys
Thermal Stability and Time-temperature-transformation Diagrams of Co-rich Nanocomposite Ribbons
Tracking Changes in Microstructure and Mechanical Properties of Electron Powder Bed Fusion Produced Inconel-738

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