Mechanical and Microstructural Characterization of Aluminium Alloy, EN AC-Al Si12CuNiMg

• Autorzy: Sirata Gotfila G. , Wacławiak K. , Dyzia Maciej

Identyfikatory

DOI

10.24425/afe.2022.140234

• Języki publikacji: EN

Abstrakty

EN

the manufacture of mechanical structures where low weight is critical. However, when these alloys are subjected to elevated temperatures, their mechanical properties deteriorate significantly. The aim of this study is to investigate the effect of temperature on the mechanical properties of aluminium alloy, EN AC-Al Si12CuNiMg. For this purpose, an experimental investigation was performed at ambient and elevated temperatures on aluminium alloy samples prepared by casting. Tensile and hardness tests were carried out to characterize the mechanical properties of this material. Additionally, an optical microscope was used to examine the microstructures of this alloy. Finally, a scanning electron microscope was used to analyze the fracture modes of this material. The results show that the mechanical properties such as tensile strength, yield strength, and Young's modulus of this alloy dramatically decrease when the temperature exceeds 250^oC. The microstructural investigation reveals several factors that are detrimental to the mechanical properties of this alloy. This includes coarse-grained structures, micro-pores, and several intermetallic compounds. Furthermore, fractography reveals a minor cleavage-like pattern and micro-cracks on the fracture surface of all failed samples under various temperatures, indicating semi-brittle fracture mode.

Słowa kluczowe

EN

aluminium alloy; mechanical properties; metallography; microstructure; fracture properties

PL

stop aluminium; właściwości mechaniczne; metalografia; mikrostruktura; właściwości pękania

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2022
• Tom: Vol. 22, iss. 3
• Strony: 34--40
• Opis fizyczny: Bibliogr. 26 poz., il., tab., wykr.

Twórcy

autor

Sirata Gotfila G.

• Faculty of Materials Engineering, Silesian University of Technology, Katowice, Poland

• https://orcid.org/0000-0003-4193-8655

autor

Wacławiak K.

• Faculty of Materials Engineering, Silesian University of Technology, Katowice, Poland

autor

Dyzia Maciej

• Faculty of Materials Engineering, Silesian University of Technology, Katowice, Poland

• https://orcid.org/0000-0002-0246-8876

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023)