Chinese Script vs Plate-Like Precipitation of Beta-Al9Fe2Si2 Phase in an Al-6.5Si-1Fe Alloy

Deni Ferdian, Claudie Josse, Patrick Nguyen, Nathalie Gey, Nicolas Ratel-Ramond, Philippe de Parseval, Yannick Thebault, Benoit Malard, Jacques Lacaze, Luc Salvo

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9 Citations (Scopus)

Abstract

The microstructure of a high-purity Al-6.5Si-1Fe (wt pct) alloy after solidification at various cooling rates was investigated. In most of the cases, the monoclinic beta-Al9Fe2Si2 phase was observed as long and thin lamellae. However, at a very slow cooling rate, Fe-bearing precipitates with Chinese script morphology appeared together with lamellae. Further analysis showed all these Chinese script precipitates correspond also to the monoclinic beta phase. This finding stresses that differentiating second phases according to their shape may be misleading.

Original languageEnglish
Article number2917
Pages (from-to)2814-2818
Number of pages5
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume46
Issue number7
DOIs
Publication statusPublished - 26 Jul 2015

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