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Title: Castable high-temperature Ce-modified Al alloys

Abstract

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 11X 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 11X 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.

Inventors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1440532
Patent Number(s):
9,963,770
Application Number:
15/204,169
Assignee:
UT-Battelle, LLC (Oak Ridge, TN) ORNL
DOE Contract Number:  
AC05-00OR22725; AC02-07CH11358; AC52-07NA27344
Resource Type:
Patent
Resource Relation:
Patent File Date: 2016 Jul 07
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Rios, Orlando, King, Alexander H., McCall, Scott K., McGuire, Michael A., Sims, Zachary C., Thorne, Cori, Weiss, David, and Ludtka, Gerard M. Castable high-temperature Ce-modified Al alloys. United States: N. p., 2018. Web.
Rios, Orlando, King, Alexander H., McCall, Scott K., McGuire, Michael A., Sims, Zachary C., Thorne, Cori, Weiss, David, & Ludtka, Gerard M. Castable high-temperature Ce-modified Al alloys. United States.
Rios, Orlando, King, Alexander H., McCall, Scott K., McGuire, Michael A., Sims, Zachary C., Thorne, Cori, Weiss, David, and Ludtka, Gerard M. Tue . "Castable high-temperature Ce-modified Al alloys". United States. https://www.osti.gov/servlets/purl/1440532.
@article{osti_1440532,
title = {Castable high-temperature Ce-modified Al alloys},
author = {Rios, Orlando and King, Alexander H. and McCall, Scott K. and McGuire, Michael A. and Sims, Zachary C. and Thorne, Cori and Weiss, David and Ludtka, Gerard M.},
abstractNote = {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 Al11X3 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 Al11X3 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {5}
}

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Works referenced in this record:

Influence of cerium additions on the corrosion behaviour of high pressure die cast AM50 alloy
journal, December 2012


Reassessment of Al-Ce and Al-Nd binary systems supported by critical experiments and first-principles energy calculations
journal, December 2005

  • Gao, Michael C.; �nl�, Necip; Shiflet, G. J.
  • Metallurgical and Materials Transactions A, Vol. 36, Issue 12, p. 3269-3279
  • DOI: 10.1007/s11661-005-0001-y

Effect of substituting cerium-rich mischmetal with lanthanum on microstructure and mechanical properties of die-cast Mg�Al�RE alloys
journal, August 2009