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Open AccessFeature PaperArticle

Microstructural Characteristics of AlSi9Cu3(Fe) Alloy with High Melting Point Elements

1
Department of Materials Engineering and Production Systems, Lodz University of Technology, 90-924 Lodz, Poland
2
Institute of Materials Science and Engineering, Lodz University of Technology, 90-924 Lodz, Poland
3
Department of Physical & Powder Metallurgy, AGH University of Science and Technology, 30-059 Krakow, Poland
*
Authors to whom correspondence should be addressed.
Metals 2020, 10(10), 1278; https://doi.org/10.3390/met10101278
Received: 18 August 2020 / Revised: 16 September 2020 / Accepted: 21 September 2020 / Published: 23 September 2020
(This article belongs to the Special Issue Solidification and Crystallization of Foundry Alloys)
The paper presents the results of microstructure tests of EN AC-46000 hypoeutectic Al–Si alloy with and without high-melting-point elements: chromium, molybdenum, vanadium, and tungsten. The above-mentioned elements were used individually or simultaneously in various combinations. The tested castings were made using two technologies: shell molding and high pressure die casting (HPDC). Using X-ray diffraction and microanalysis of the chemical composition an attempt to determine the phase structure of the tested alloy was made. It has been shown that the microstructure of the base alloy consists of dendrites of α(Al) solid solution and complex eutectic mixtures: ternary α(Al) + Al15(Fe,Mn)3Si2 + β(Si) and quaternary α(Al) + Al2Cu + AlSiCuFeMgMnNi + β(Si). High-melting point elements, regardless of the combination used, attach mainly to intermetallic phases rich in Fe and form the Al15(Fe,Mn,M)3Si2 phase, where M is any high melting point element or a combination of such elements. It has been shown that the area fraction of the above-mentioned phase increases with increasing content of high melting point elements. A greater area fraction of the Al15(Fe,Mn,M)3Si2 phase in the casting from the shell mold in relation to the high pressure die casting has been also found. View Full-Text
Keywords: multicomponent Al-Si alloys; microstructure; high pressure die casting (HPDC); thermal analysis multicomponent Al-Si alloys; microstructure; high pressure die casting (HPDC); thermal analysis
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MDPI and ACS Style

Szymczak, T.; Gumienny, G.; Klimek, L.; Goły, M.; Pacyniak, T. Microstructural Characteristics of AlSi9Cu3(Fe) Alloy with High Melting Point Elements. Metals 2020, 10, 1278.

AMA Style

Szymczak T, Gumienny G, Klimek L, Goły M, Pacyniak T. Microstructural Characteristics of AlSi9Cu3(Fe) Alloy with High Melting Point Elements. Metals. 2020; 10(10):1278.

Chicago/Turabian Style

Szymczak, Tomasz; Gumienny, Grzegorz; Klimek, Leszek; Goły, Marcin; Pacyniak, Tadeusz. 2020. "Microstructural Characteristics of AlSi9Cu3(Fe) Alloy with High Melting Point Elements" Metals 10, no. 10: 1278.

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