4.7 Article

Modification of Fe-containing intermetallic compounds by K addition to Fe-rich AA319 aluminum alloys

Journal

SCRIPTA MATERIALIA
Volume 53, Issue 8, Pages 937-942

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2005.06.022

Keywords

aluminum alloys; intermetallic phases; differential thermal analysis (DTA); modification

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The influence of K addition on the Fe-containing intermetallic compounds in Fe-rich AA319 Al alloys has been investigated. At 0.5 wt.% Fe level, K modifies the platelet beta-Al5FeSi compound into the Chinese script alpha-Al(8)Fe(2)Fi compound. Moreover, K addition modifies the eutectic Si simultaneously. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

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