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Lookup NU author(s): Professor Kenneth Dalgarno
The role of processing parameters on the densification mechanism and microstructural evolution in laser sintered Al-12Si powder has been explored. It was established that both the densification mechanism and microstructural evolution in laser sintered Al-12Si powder were controlled by the specific laser energy input. Analysis of the cross-section of laser sintered microstructures of Al-12Si powders indicated that the tops of the grains in the previous layer are partially re-melted and then undergo epitaxial growth in the next layer where the heat affected zones (HAZ) grain boundaries and solidification grain boundaries (SGBs) are continuous along the fusion boundary. (C) 2010 Elsevier B.V. All rights reserved.
Author(s): Olakanmi EO, Cochrane RF, Dalgarno KW
Publication type: Article
Publication status: Published
Journal: Journal of Materials Processing Technology
Year: 2011
Volume: 211
Issue: 1
Pages: 113-121
Print publication date: 15/09/2010
Date deposited: 03/01/2012
ISSN (print): 0924-0136
ISSN (electronic): 1873-4774
Publisher: Elsevier SA
URL: http://dx.doi.org/10.1016/j.jmatprotec.2010.09.003
DOI: 10.1016/j.jmatprotec.2010.09.003
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