Application of Ce for scavenging Cu impurities in A356 Al alloys

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 alloyin...

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Published in:European journal of materials 2022, Vol.1 (1), p.3-18
Main Authors: Sims, Zachary C., Henderson, Hunter B., Thompson, Michael J., Chaudhary, Rakesh P., Hammons, Joshua A., Ilavsky, Jan, Weiss, David, Anderson, Kevin, Ott, Ryan, Rios, Orlando
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Language:English
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aluminium
MATERIALS SCIENCE
rare earths
recycling
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cited_by cdi_FETCH-LOGICAL-c3081-357891dfc83efe904e2f4d52535f4b43a813a9be14ddeee917896ecddf8f06023
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container_title European journal of materials
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creator Sims, Zachary C.
Henderson, Hunter B.
Thompson, Michael J.
Chaudhary, Rakesh P.
Hammons, Joshua A.
Ilavsky, Jan
Weiss, David
Anderson, Kevin
Ott, Ryan
Rios, Orlando
description 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.
doi_str_mv 10.1080/26889277.2021.1974801
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subjects aluminium
MATERIALS SCIENCE
rare earths
recycling
title Application of Ce for scavenging Cu impurities in A356 Al alloys
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