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2020 | OriginalPaper | Buchkapitel

The Efficacy of Replacing Metallic Cerium in Aluminum–Cerium Alloys with LREE Mischmetal

verfasst von: Zachary C. Sims, David Weiss, Orlando Rios, Hunter B. Henderson, Michael S. Kesler, Scott K. McCall, Michael J. Thompson, Aurelien Perron, Emily E. Moore

Erschienen in: Light Metals 2020

Verlag: Springer International Publishing

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Abstract

The ongoing development of aluminum–cerium alloys has produced materials exhibiting elevated temperature mechanical property retention, long term microstructural stability, and flexible processability compared to traditional aluminum alloys, accommodating the growing demand for high temperature aluminum alloys not requiring the use of high-cost elements like scandium. To date, reported Al–Ce alloy compositions contain large amounts of elemental cerium. Mischmetal (MM), a mixture of lanthanum, cerium, and other light rare earth elements (LREE) is less expensive and more available than pure cerium. The chemical similarity of the LREEs means there is possibility to use MM as the primary alloy addition, lowering alloy cost. This talk will report the effect of using MM instead of cerium in a 12 wt% binary alloy on mechanical properties, phase constituency, thermal stability, and load sharing. Results will show that MM can be substituted completely for cerium with a mostly positive impact on alloy performance.
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Metadaten
Titel
The Efficacy of Replacing Metallic Cerium in Aluminum–Cerium Alloys with LREE Mischmetal
verfasst von
Zachary C. Sims
David Weiss
Orlando Rios
Hunter B. Henderson
Michael S. Kesler
Scott K. McCall
Michael J. Thompson
Aurelien Perron
Emily E. Moore
Copyright-Jahr
2020
DOI
https://doi.org/10.1007/978-3-030-36408-3_30

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