Application of Ce for scavenging Cu impurities in A356 Al alloys

Autor: Zachary C. Sims, Hunter B. Henderson, Michael J. Thompson, Rakesh P. Chaudhary, Joshua A. Hammons, Jan Ilavsky, David Weiss, Kevin Anderson, Ryan Ott, Orlando Rios
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: European Journal of Materials, Vol 1, Iss 1, Pp 3-18 (2022)
Druh dokumentu: article
ISSN: 2688-9277
26889277
DOI: 10.1080/26889277.2021.1974801
Popis: Secondary (recycled) Al is increasingly used in castings due to its lower cost and carbon footprint relative to primary Al. However, the presence of certain impurity elements in secondary Al degrades its properties, often requiring dilution or downgrading. Scavenging impurities with reactive alloying additions can limit impurity impact and broaden the use of secondary Al. This report will detail the initial results of using Ce to microstructurally tie up Cu impurities present in a model secondary Al alloy (A356) with high Cu impurity. The results show that targeted Ce additions to A356 can be used to scavenge Cu impurities by forming complex intermetallics and inhibit intergranular corrosion susceptibility associated with Cu impurities. Supplemental data for this article is available online at
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