SOLIDIFICATION ANALYSIS OF ALUMINUM-BASED MEDIUM ENTROPY CASTING ALLOY

1 PIĄTKOWSKI Jarosław
Co-authors:
1 GRADOŃ Paweł 1 LACHOWSKA Martyna
Institution:
1 Silesian University of Technology, Faculty of Materials Engineering and Metallurgy, Katowice, Silesia, Poland, EU, jaroslaw.piatkowski@polsl.pl, pawel.gradon@polsl.pl, martyna.lachowska@polsl.pl
Conference:
28th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 22nd - 24th 2019
Proceedings:
Proceedings 28th International Conference on Metallurgy and Materials
Pages:
1216-1221
ISBN:
978-80-87294-92-5
ISSN:
2694-9296
Published:
4th November 2019
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
38 views / 12 downloads
Abstract

Alloys with increased configurational entropy are new group of materials with very broad range of possible properties, but their application potential is currently limited because of complicated and inefficient manufacturing processes used mainly on laboratory scale. Paper presents the results of preliminary research aimed on manufacturing castings made of medium entropy alloys (MEA) by industry scale casting technologies. The main aim of the presented research was to determine the influence of melting and casting conditions on the solidification process of selected Al-based MEA’s. The alloys were poured into sample moulds made of material with heat transfer coefficient similar to those used in industrial scale manufacturing processes. Furthermore, the pattern used in the mould preparation was designed to create zones of varied heat dissipation rates and thus solidification rate. Solidification process was characterized by use of thermal-derivative analysis and differential scanning calorimetry. The structure in as-cast state and chemical composition in micro-areas were investigated using SEM microscopy and EDS analysis.

Keywords: Metallurgy, casting, aluminum alloys, medium entropy alloys, solidification, thermal analysis
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