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Meeting Materials Science & Technology 2017
Symposium Rare Earth Metals, Compounds, and Alloys: Synthesis, Processing, Emerging Applications, Recent Advances, Future Challenges
Presentation Title New Aluminum Alloys Based on Common Rare Earth Additives
Author(s) David Weiss, Orlando Rios
On-Site Speaker (Planned) David Weiss
Abstract Scope Aluminum alloys containing cerium in near eutectic compositions have demonstrated high mechanical properties at temperatures over 250C. These alloys, which can contain magnesium, silicon, nickel or iron as secondary alloying elements, are suitable for all casting processes including high pressure diecasting, squeeze casting, permanent mold and sand casting. The alloys can be used in similar formulations for forging and extrusion. The Al-Ce alloy system can be used as a common template for wide-ranging alloy development, similar to the Al-Si system. The Al-Ce forms an intermetallic that is stable up to the melting point of the alloy. The near zero solubility of Ce in aluminum limits diffusion and Ostwald ripening. At cooling rates that are typical of some casting processes, the intermetallic formed is on the scale of 100-200 nanometers contributing to effective dispersion strengthening. This paper discusses the strengthening mechanisms, properties and applications of the Al-Ce-Mg alloy system.
Proceedings Inclusion? Undecided

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Look at Where We Stand on Addressing Technology Needs for Diversifying the Supply of Critical Materials for Clean Energy
Advances in REE Metal Making Technologies – A Review
Advances in Scalable Nano-manufacturing and Assembly Techniques - Role of REEs
An Aluminum Alloy Containing Rare Earth Elements for Elevated Temperature Applications
Beneficiation of Rare Earth Minerals
Cost-effective Separation of Rare-earth Elements Using the RapidSX(TM) Process
Current Status and Future Challenges Facing Rare Earth Materials Industry
Defense Logistics Agency – Strategic Materials (DLA-SM): Possible Actions Towards Mitigating the Risk of Rare Earths Shortfall
Economics of Rare Earth Projects
Experimental Characterization of Discarded Electronic Batteries
Historical Perspectives on Rare Earths, Critical Materials, and the Legacy of Karl Gschneidner
Investigation of Al-Sc Alloy for Lightweight Armor
J-55: Effect of Processing Method on Thermal Conductivity of Mg-Ce-Zn-Zr Alloy
Magnetocalorics: Rare Earths are Paving the Way to Efficient Cooling
Molecular Recognition Technology: A Green Chemistry, Economical Process for Separation and Recovery of Individual Rare Earth Metals
New Aluminum Alloys Based on Common Rare Earth Additives
On The Utility of Rare Earth Elements as Alloying Additions to Magnesium Alloys: Current Status and Considerations
Opportunities and Challenges for the Rare Earth Magnet Industry
Partial Substitution of Scandium with Rare-Earth Elements in Dilute Al-Sc-RE Alloys with Nanometric, Coherent Trialuminide Precipitates
Processing Recycled Rare Earth Magnet Alloys
Production Status and Forecast for the Availability of Rare Earth Materials
Prospects for New Rare-earth Mines Outside of China: What Happened to the 400 Exploration Projects?
Rare-Earth Permanent Magnets without Heavy Rare Earth Elements: Recent Developments and Applications
Rare Earth Metals (REMs) Additions for Precipitation Strengthening High-performance Al and AlMg Alloys
Replacing Scandium by Heavy Rare-earth Metals in High-performance Aluminum Alloys
Supply Chain Requirements for New Ocean Resource
Synthetic Methods for Establishing a Reliable Thermochemical Databank
The Aging Response of a Sc-free Al-0.045Er-0.08Hf-0.08Zr (at.%) Alloy
The Regulatory Framework for Rare Earth Mining and Oxide Separation in the United States

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