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Effect of pouring temperature and cooling slope length on microstructure and mechanical properties of Rheocast A319 aluminium alloy

Salleh, Mohd Shukor and Omar, Mohd Zaidi and Syarif, Junaidi and Mohammed, Mohammed Naser and Alhawari, Khaled Salem (2015) Effect of pouring temperature and cooling slope length on microstructure and mechanical properties of Rheocast A319 aluminium alloy. Applied Mechanics and Materials, 699. pp. 251-256. ISSN 1660-9366

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Abstract

Aluminium alloys are among the most prominent and well known materials used in automotive industries. Nowadays, many vehicles used aluminium engine blocks instead of cast iron to improve fuel efficiency. Among cast aluminium alloys, A319 grade alloys are normally used in automotive industries due to a combination of good fluidity and mechanical strength. In this study, A319 cooling slope rheocasting billets were produced in order to obtain near spherical morphology of primary aluminium phase. The change in the α-Al morphology upon the cooling slope casting was remarkable and the dendritic microstructure was almost replaced by α-Al globules and rosettes. The rheocasting billets were prepared for tensile testing at room temperature. It is found that, the yield strength and elongation of cooling slope rheocasting billets is higher than those from as-cast A319 alloy.

Item Type: Article
Uncontrolled Keywords: A319 aluminium alloy, cooling slope, tensile properties and fracture surface
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Manufacturing Engineering > Department of Manufacturing Process
Depositing User: Dr MOHD SHUKOR SALLEH
Date Deposited: 30 Mar 2015 07:03
Last Modified: 28 May 2015 04:37
URI: http://eprints.utem.edu.my/id/eprint/14311

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