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Castable High-Temperature Ce-Modified Al Alloys

United States Patent Application

20170096730
A1
View the Complete Application at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
A cast alloy includes aluminum and from about 5 to about 30 weight percent of at least one material selected from the group consisting of cerium, lanthanum, and mischmetal. The cast alloy has a strengthening Al.sub.11X.sub.3 intermetallic phase in an amount in the range of from about 5 to about 30 weight percent, wherein X is at least one of cerium, lanthanum, and mischmetal. The Al.sub.11X.sub.3 intermetallic phase has a microstructure that includes at least one of lath features and rod morphological features. The morphological features have an average thickness of no more than 700 um and an average spacing of no more than 10 um, the microstructure further comprising an eutectic microconstituent that comprises more than about 10 volume percent of the microstructure.
Rios, Orlando (Knoxville, TN), King, Alex H. (Ames, IA), McCall, Scott K. (Livermore, CA), McGuire, Michael A. (Knoxville, TN), Sims, Zachary C. (Knoxville, TN), Thorne, Cori (Manitowoc, WI), Weiss, David (Manitowoc, WI), Ludtka, Gerard M. (Oak Ridge, TN)
15/ 204,169
July 7, 2016
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH [0001] This invention was made with Government support under DE-AC05-00OR22725 and DE-AC02-07CH11358, and DE-AC52-07NA27344 awarded by the United States Department of Energy. The Government has certain rights in the invention.