A Formation Map of Iron-Containing Intermetallic Phases in Recycled Cast Aluminum Alloys

被引：45

作者：

Cinkilic, E. ^{[1
]}

Ridgeway, C. D. ^{[1
]}

Yan, X. ^{[2
]}

Luo, A. A. ^{[1
,3
]}

机构：

[1] Ohio State Univ, Dept Mat Sci & Engn, 116 W 19Th Ave, Columbus, OH 43210 USA

[2] Alcoa Tech Ctr, New Kensington, PA 15068 USA

[3] Ohio State Univ, Dept Integrated Syst Engn, Columbus, OH 43210 USA

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2019年 / 50卷 / 12期

基金：

美国国家科学基金会;

关键词：

FE-RICH INTERMETALLICS; MECHANICAL-PROPERTIES; COOLING RATE; IN-SITU; AL; MANGANESE; MN; MICROSTRUCTURE; NUCLEATION; GROWTH;

D O I：

10.1007/s11661-019-05469-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The cooling rate-dependent modification effect of Mn on the formation of Fe-containing intermetallic phases during solidification of Al-Si-Mg secondary cast aluminum alloys [containing 0.5 to 1 pct Fe (All compositions are in wt pct unless otherwise stated.)] was investigated by CALculation of PHAse Diagrams (CALPHAD) modeling and solidification experiments. The critical Mn concentration required to prevent the formation of detrimental beta-Al5FeSi was found to be dependent on both the alloy composition (particularly the Fe/Mn ratio) and the cooling rate. A map of Fe/Mn ratio vs cooling rate was created, to summarize the metallurgical conditions of Fe-rich intermetallic phase formation. By understanding such formation conditions, the microstructure of aluminum castings can be controlled to create low-cost secondary alloys with high Fe content.

引用

页码：5945 / 5956

页数：12

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