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
收藏
页码：5945 / 5956
页数：12
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