Effect of Chromium on Phase Formation of Intermetallic Aluminum Alloys in the Al-Fe-Si System

V.A. Andreyachshenko; A.R. Toleuova

doi:10.31643/2027/6445.25

Authors

V.A. Andreyachshenko Abylkas Saginov Karaganda Technical University
A.R. Toleuova Abylkas Saginov Karaganda Technical University

DOI:

https://doi.org/10.31643/2027/6445.25

Keywords:

AlFeSi, intermetallic phases, simulation and modelling, diagrams phase transformation, microstructure.

Abstract

The article explores the prospects for the development of Kazakhstan's aluminum industry, with a focus on the application of additive manufacturing technologies for the synthesis of chromium-alloyed composite aluminum alloys in the Al-Fe-Si system. A comprehensive metallographic and thermodynamic analysis of the phase composition of alloys synthesized by consumable electrode surfacing was carried out. The use of Thermo-Calc software enabled the construction of polythermal sections and the assessment of the influence of alloying element concentrations on the formation of intermetallic phases, including Al₁₃Fe₄ (θ-phase) and Al₈Fe₂Si. The optimal chromium alloying conditions were substantiated, ensuring reduced brittleness and improved mechanical properties through the formation of a fine-grained structure, stabilization of the phase composition, and removal of large primary dendrites. The obtained results confirm the potential of chromium alloying as an effective approach in developing intermetallic aluminum alloys with the desired properties. The study's results contribute to the advancement of technologies for producing aluminum alloys with enhanced performance characteristics, thereby expanding the potential for industrial applications of additive manufacturing methods.

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Author Biographies

V.A. Andreyachshenko, Abylkas Saginov Karaganda Technical University

PhD, associate professor, Head of the Testing Laboratory, Engineering Profile, Comprehensive Development of Mineral Resources. Abylkas Saginov Karaganda Technical University, N. Nazarbayev Ave., 56, Karaganda, Kazakhstan. ORCID ID: https://orcid.org/0000-0001-6933-8163

A.R. Toleuova, Abylkas Saginov Karaganda Technical University

PhD, associate professor, docent of the department of Nanotechnology and Metallurgy. Abylkas Saginov Karaganda Technical University, N. Nazarbayev Ave., 56, Karaganda, Kazakhstan. ORCID ID: https://orcid.org/0000-0002-3216-1824

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