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Phase Diagram of the Al-Ca-Fe-Si System and Its Application for the Design of Aluminum Matrix Composites

Phase Diagram of the Al-Ca-Fe-Si System and Its Application for the Design of Aluminum Matrix... The phase composition of aluminum alloys in the Al-Ca-Fe-Si system, including the distribution of phases in the solid state and solidification reactions, has been studied. It is shown that the addition of iron and silicon to Al-Ca alloys leads to the formation of ternary Al2CaSi2 and Al10CaFe2 compounds. The equilibrium between these compounds implies the occurrence of the quaternary L → Al + Al4Ca + Al2CaSi2 + Al10CaFe2 eutectic reaction. The alloys near this eutectic have the best structure, which is typical of aluminum matrix composites. It is shown that Al-Ca alloys can have high manufacturability during both shape casting and rolling. This is due to the combination of a narrow temperature range of solidification and a favorable morphology for the eutectic, which has a fine structure. The combination of the mechanical and physical properties of the Al-Ca eutectic-based alloys significantly exceed those of branded alloys based on aluminum–silicon eutectics. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png JOM Springer Journals

Phase Diagram of the Al-Ca-Fe-Si System and Its Application for the Design of Aluminum Matrix Composites

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Publisher
Springer Journals
Copyright
Copyright © 2018 by The Minerals, Metals & Materials Society
Subject
Engineering; Engineering, general; Chemistry/Food Science, general; Physics, general; Environment, general; Earth Sciences, general
ISSN
1047-4838
eISSN
1543-1851
DOI
10.1007/s11837-018-2948-3
Publisher site
See Article on Publisher Site

Abstract

The phase composition of aluminum alloys in the Al-Ca-Fe-Si system, including the distribution of phases in the solid state and solidification reactions, has been studied. It is shown that the addition of iron and silicon to Al-Ca alloys leads to the formation of ternary Al2CaSi2 and Al10CaFe2 compounds. The equilibrium between these compounds implies the occurrence of the quaternary L → Al + Al4Ca + Al2CaSi2 + Al10CaFe2 eutectic reaction. The alloys near this eutectic have the best structure, which is typical of aluminum matrix composites. It is shown that Al-Ca alloys can have high manufacturability during both shape casting and rolling. This is due to the combination of a narrow temperature range of solidification and a favorable morphology for the eutectic, which has a fine structure. The combination of the mechanical and physical properties of the Al-Ca eutectic-based alloys significantly exceed those of branded alloys based on aluminum–silicon eutectics.

Journal

JOM – Springer Journals

Published: May 30, 2018

References

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    Jabłońska, MB; Rodak, K; Bednarczyk, I
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    Basak, CB; Babu, NH
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