TY - GEN
T1 - The Efficacy of Replacing Metallic Cerium in Aluminum–Cerium Alloys with LREE Mischmetal
AU - Sims, Zachary C.
AU - Weiss, David
AU - Rios, Orlando
AU - Henderson, Hunter B.
AU - Kesler, Michael S.
AU - McCall, Scott K.
AU - Thompson, Michael J.
AU - Perron, Aurelien
AU - Moore, Emily E.
N1 - Publisher Copyright:
© 2020, The Minerals, Metals & Materials Society.
PY - 2020
Y1 - 2020
N2 - 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.
AB - 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.
KW - High-temperature aluminum alloy
KW - Rare earth metal
KW - Sand casting
UR - http://www.scopus.com/inward/record.url?scp=85079615770&partnerID=8YFLogxK
U2 - 10.1007/978-3-030-36408-3_30
DO - 10.1007/978-3-030-36408-3_30
M3 - Conference contribution
AN - SCOPUS:85079615770
SN - 9783030364076
T3 - Minerals, Metals and Materials Series
SP - 216
EP - 221
BT - Light Metals 2020
A2 - Tomsett, Alan
PB - Springer Science and Business Media Deutschland GmbH
T2 - Light Metals Symposium held at the 149th Annual Meeting and Exhibition, TMS 2020
Y2 - 23 February 2020 through 27 February 2020
ER -