Formation of Intermetallic Phases in Solidifying Al-Fe-Si Melts

A special issue of Metals (ISSN 2075-4701).

Deadline for manuscript submissions: closed (10 May 2020) | Viewed by 3414

Special Issue Editor


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Guest Editor
Foundry Research Institute, 30-418 Kraków, Poland
Interests: aluminum alloys; intermetallic phases; microstructure description; microscope observations; in situ analysis (EDS, EBSD)

Special Issue Information

Dear Colleagues,

This Special Issue of Metals will be dedicated to the presentation of the current state of knowledge regarding the formation of the intermetallic phases on the solidification path of aluminum alloys containing Fe, Mn, and Si.

Particular attention will be paid to kinetics and the mechanism of the polyphase reactions in which the intermetallics containing transition metals, such as Fe and Mn, take part. These phenomena are the subject of numerous publications, due to their importance for technical alloys but also due to the specific properties of the intermetallic phases in this group. These phases form microstructure constituents that are important for technical alloys properties, and the control of processes of their formation in liquid alloys is still a problem. Moreover, some parts of the Al-Fe-Si and Al-Fe-Mn-Si equilibrium diagrams have still not been fully described. The temperature and concentration limit the equilibrium phase stability regarding confirmation or correction. Research on determining the rule for stabilizing their crystalline structure and identifying the nature of interatomic bonds and subnet structures also affects the basic problem of stabilizing the structure of metal alloys. The rapid development of research techniques means that many issues related to this subject are presented in a new light and new questions arise. Therefore, the authors of works presenting new research results related to a wide range of the above-mentioned problems as well as reviews are invited to publish them in this special edition of Metals.

Prof. Małgorzata Warmuzek
Guest Editor

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Keywords

  • aluminum alloys
  • intermetallic phases
  • transition metals

Published Papers (1 paper)

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Research

9 pages, 5205 KiB  
Article
Microstructural Evolution and Growth of Intermetallic Compounds at the Interface between Solid Cast Iron and Liquid Al–Si Alloy
by Jeong-Min Kim, Keesam Shin and Je-Sik Shin
Metals 2020, 10(6), 759; https://doi.org/10.3390/met10060759 - 6 Jun 2020
Cited by 9 | Viewed by 2874
Abstract
Compound casting has received a great deal of attention as a useful method for fabricating a single complicated part from dissimilar metallic materials. For example, in the case of automobile cylinder blocks, research is being carried out to compound cast iron with aluminum [...] Read more.
Compound casting has received a great deal of attention as a useful method for fabricating a single complicated part from dissimilar metallic materials. For example, in the case of automobile cylinder blocks, research is being carried out to compound cast iron with aluminum alloys. In order to manufacture such as composite parts, it is essential to control the intermetallic compound formed at the interface between two metals. In this research, the type and growth behavior of compounds formed at the interface between cast iron and aluminum, or Al–Si alloy, were investigated. It was observed that the Al5Fe2 phase was mainly formed at the interface between the pure aluminum melt and the solid cast iron, and the thickness of the interfacial compound increased proportionally with increasing contact time. On the other hand, more complex phases were formed at the interface between the Al–Si alloy melt and the solid cast iron. In the case of a specimen having a contact time of 10 min, Al4.5FeSi, Al8Fe2Si and Al5Fe2 phases appeared to occupy the largest portion of the interfacial compound region. The total thickness of the interfacial compounds also increased in proportion to the contact time. Full article
(This article belongs to the Special Issue Formation of Intermetallic Phases in Solidifying Al-Fe-Si Melts)
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