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The Effect of Cerium Addition on the Microstructure of AlSiMgCe Alloy

Anasyida Abu Seman , and Abdul Razak Daud, (2008) The Effect of Cerium Addition on the Microstructure of AlSiMgCe Alloy. Solid State Science and Technology, 16 (1). pp. 168-174. ISSN 0128-7389

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Official URL: http://mass-malaysia.net/webjournal/wp-content/uploads/2008/Journal%20MASS%202008%20Jilid%201%20pdf/Anasyida%20Abu%20Seman%20168-174.pdf

Affiliations

Universiti Kebangsaan Malaysia, School of Applied Physics
Universiti Kebangsaan Malaysia, School of Applied Physics

Abstract

In this study the effect of cerium addition on the microstructure and microhardness of Al-12.5Si-4Mg alloy was investigated. Experiments have been conducted on Al–12.5Si–4Mg alloys with cerium content in the alloy was varied from 0.5 to 3wt%. The alloys were produced by casting in a permanent mould. Optical microscopy, scanning electron microscopy and energy dispersive X-Ray spectroscopy, X-ray diffractometry and Vickers microhardness were used in this investigation. The results show that the addition of 0.5 to 3.0wt% of cerium led to the formation of precipitation of Al4Ce phase in the Al-matrix. The microhardness of as cast alloy increases with the increase in cerium content as a result of the precipitation. Heat treatment at 200ºC led to the increase in microhardness of as cast alloys due clustering of Si and precipitation of fine Al4Ce phase.

Item Type:Journal
Keywords:Cerium addition,microstructure, microhardness,
Subjects:Q Science, Computer Science
ID Code:10864

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