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 <inf>4</inf>C<inf>3</inf> platelets. © 2004 Kluwer Academic Publishers.

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dc.contributor.authorBhat, K.U.
dc.contributor.authorSurappa, M.K.
dc.date.accessioned2026-02-05T11:00:20Z
dc.date.issuedMicrostructural studies in low specific energy laser surface treated Al(A356)-SiCp composites
dc.description.abstract2004
dc.identifier.citationJournal of Materials Science, 2004, 39, 8, pp. 2795-2799
dc.identifier.issn222461
dc.identifier.urihttps://doi.org/10.1023/B:JMSC.0000021456.69791.08
dc.identifier.urihttps://idr.nitk.ac.in/handle/123456789/27950
dc.subjectCeramic materials
dc.subjectEnergy dispersive spectroscopy
dc.subjectLaser applications
dc.subjectLaser beams
dc.subjectMicrostructure
dc.subjectNeodymium lasers
dc.subjectScanning electron microscopy
dc.subjectSilicon compounds
dc.subjectSolidification
dc.subjectSurface treatment
dc.subjectX ray diffraction analysis
dc.subjectDendritic structure
dc.subjectLaser surface treatment
dc.subjectPulse energy
dc.subjectAluminum
dc.titleSiC 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 <inf>4</inf>C<inf>3</inf> platelets. © 2004 Kluwer Academic Publishers.

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