VARIABILITY OF MECHANICAL AND CORROSION PROPERTIES OF STANDARDIZED ALUMINUM-BASED ALLOYS

1 ŠERÁK Jan
Co-authors:
1 VOŇAVKOVÁ Ilona 1 VOJTĚCH Dalibor
Institution:
1 University of Chemistry and Technology Prague, Department of Metals and Corrosion Engineering, Prague, Czech Republic, serakj@vscht.cz
Conference:
27th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 23rd - 25th 2018
Proceedings:
Proceedings 27th International Conference on Metallurgy and Materials
Pages:
1759-1764
ISBN:
978-80-87294-84-0
ISSN:
2694-9296
Published:
24th October 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
18 views / 8 downloads
Abstract

Aluminum alloys show a high strength-to-weight ratio and a relatively good corrosion resistance making them prospective structural materials in many fields. In material standards of commercial Al alloys, chemical composition is always defined as concentration ranges of alloying elements and impurities. In some cases, concentration ranges allowed within one material grade are relatively wide. It can be expected that mechanical and corrosion properties of one material grade are also variable that can be problematic in some applications. Three commercial aluminum casting alloys (AlSi5Cu4Zn, AlSi9Cu3Fe, AlSi10MgMn) with chemical composition on the lowest and highest content of alloying elements prescribed by their material standards were studied. Microstructure, selected mechanical properties (hardness, tensile testing) and corrosion resistance (short-term exposure AUDI test) were determined. The properties of the alloys were tested in as-cast state and after their recommended heat treatment. The significant influence of chemical composition on the properties of aluminum alloys was found.

Keywords: Aluminum alloys, mechanical properties, material standards, heat treatment, corrosion test
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