Please use this identifier to cite or link to this item: http://idr.nitk.ac.in/jspui/handle/123456789/12496
Title: Microstructural studies in low specific energy laser surface treated Al(A356)-SiCp composites
Authors: Bhat, K.U.
Surappa, M.K.
Issue Date: 2004
Citation: Journal of Materials Science, 2004, Vol.39, 8, pp.2795-2799
Abstract: SiC particulate reinforced A356 Al metal matrix composites were laser treated using pulsed Nd-YAG laser beam. The processing was carried out in air atmosphere at varying pulse energy (5 to 20 J) and scan rates (30 to 150 mm/sec). The samples were cut perpendicular to the track and they were characterized using optical microscopy, scanning electron microscopy and X-ray diffraction. Microstructure of laser treated region consists of regular succession of coarse and fine microstructure signifying the presence of low velocity bands. Transition from cellular/columnar dendritic to equiaxed dendritic structure has been observed. Microstructure of samples laser treated with specific energy greater than 13 kJ/cm2 show presence of Al 4C3 platelets. 2004 Kluwer Academic Publishers.
URI: http://idr.nitk.ac.in/jspui/handle/123456789/12496
Appears in Collections:1. Journal Articles

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