[Kovove materialy - Metallic materials]
    Sat - February 04, 2023 - 05:45 No. of hits : 1424675 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 60 (2022), Issue 3

Development of a sustainable novel aluminum alloy from scrap car wheels through a stir-squeeze casting process
AL MAAWALI JABER, PRADEEP KUMAR KRISHNAN
vol. 60 (2022), no. 3, pp. 151 - 161
DOI: 10.31577/km.2022.3.151

Abstract
Aluminum alloys are extensively finding applications in many industries, including automotive and aerospace, because of their lightweight. This research produced a novel aluminum alloy using a stir squeeze casting technique. Sustainability analysis of three competing processes to produce the alloy was carried out using Analytical Hierarchy Process (AHP) method. Scrap aluminum alloy wheels from cars were used as the matrix material. High entropy alloy (HEA) was used as the alloying element, with a total weight percentage of 2.6 %. Hardness, tensile and compressive strength tests were conducted for the developed alloy. An optical microscope, SEM, and XRD were used to analyze the microstructure. The produced alloy was heat-treated, and then mechanical properties and microstructure were compared before and after heat treatment. The results showed a significant improvement in hardness and compressive strength after heat treatment. This improvement is mainly attributed to the Si particle precipitation that occurred during the aging process.

Key words
aluminum alloys, sustainability, squeeze casting, High Entropy Alloy (HEA), Analytical Hierarchy Process (AHP) method, T6 heat treatment

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Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.


Article abstracts updated: 2023-01-25 08:13      
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