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Effect of a two-step solution heat treatment on the microstructure and mechanical properties of 332 aluminium silicon cast alloy


Citation

Mohamed Ariff, Azmah Hanim and Chang, S. Chuan and Chuan, O. Khang (2011) Effect of a two-step solution heat treatment on the microstructure and mechanical properties of 332 aluminium silicon cast alloy. Materials and Design, 32 (4). pp. 2334-2338. ISSN 0264-1275; ESSN: 1873-4197

Abstract

This paper investigated the effect of a two-step solution heat treatment on the mechanical properties and silicon-rich phase of 332 aluminium alloy. Traditional single-step T6 solution treatment (495 °C/6 h) increased the hardness value of the alloy by 5.96%, increased the tensile strength by 20.42% and reduced the elongation by 3.97%. Two-step solution treatment of the alloy (495 °C/2 h followed by 515 °C/4 h) increased the hardness value by 6.64%, increased the tensile strength by 16.01%, and reduced the elongation by 4.67% compared to the as-cast samples. Both solution treatments were followed by hot water quenching (75–90 °C) and artificial aging at 250 °C for 4 h. The difference in mechanical properties after heat treatment can be linked to the refinement and the spheroidisation of the silicon-rich phase in the alloy.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
DOI Number: https://doi.org/10.1016/j.matdes.2010.12.040
Publisher: Elsevier
Keywords: Heat treatment; Mechanical properties; Aluminum; Aluminum alloys
Depositing User: Nabilah Mustapa
Date Deposited: 01 Dec 2015 00:55
Last Modified: 01 Dec 2015 00:55
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.matdes.2010.12.040
URI: http://psasir.upm.edu.my/id/eprint/22946
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