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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/4791

Title: Laser surface alloying of aluminum (AA1200) with Ni and SiC Powders
Authors: Mabhali, LAB
Pityana, SL
Sacks, N
Keywords: Al4C3
Intermetallic compounds
Laser surface alloying
Metal matrix composite
Surface hardness
Materials processing
Manufacturing processes
Issue Date: Dec-2010
Publisher: Taylor & Francis
Citation: Mabhali, LAB, Pityana, Sl and Sacks, N. 2010. Laser surface alloying of aluminum (AA1200) with Ni and SiC Powders. Materials and Manufacturing Processes, Vol. 25(12), pp 1397 - 1403
Series/Report no.: Journal Article
Abstract: An Nd:YAG laser was used for surface alloying of aluminum AA1200. The alloying powder was a mixture of Ni and SiC in different ratios. A study of the microstructures obtained after alloying was conducted using optical and scanning electron microscopy. Energy-dispersive X-ray (EDX) and X-ray diffraction (XRD) were used for phase identification. Analysis of the alloyed layer revealed the presence of Al4C3, AlNi3, and -Al-Si eutectic phases. The SiC particles dissociated into Si and C. The dissociated C reacted with Al to form Al4C3. The addition of Ni resulted in the formation of the Al3Ni phase. A hardness increase of approximately four times that of aluminum AA1200 was achieved in the alloyed layer.
Description: Copyright: 2010 Taylor and Francis. This is the author's pre print version. The definitive version is published in Materials and Manufacturing Processes, Vol. 25(12), pp 1397 - 1403
URI: http://pdfserve.informaworld.com/578350_769431896_931352428.pdf
http://hdl.handle.net/10204/4791
ISSN: 1042-6914
Appears in Collections:Laser materials processing
General science, engineering & technology

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