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dc.contributor.author Pityana, S
dc.date.accessioned 2010-07-16T11:18:24Z
dc.date.available 2010-07-16T11:18:24Z
dc.date.issued 2010-03
dc.identifier.citation Pityana, S. 2010. Microstructures of alloyed and dispersed hard particles in the aluminium surface. 4th Pacific International Conference on Applications of Lasers and Optics Shangri-La Hotel (Wuhan, Peoples Republic of China), 23-25 March 2010, pp 6 en
dc.identifier.uri http://hdl.handle.net/10204/4095
dc.description 4th Pacific International Conference on Applications of Lasers and Optics Shangri-La Hotel (Wuhan, Peoples Republic of China), 23-25 March 2010 en
dc.description.abstract Laser surface alloying of A1200 aluminium alloy was carried out using a 4.4 kW Nd:YAG laser. Powder mixtures of SiC and TiC hard particles were injected into the laser generated melt pool on the aluminium substrate using a commercial powder feeder. The uniformly dispersed particles penetrated approximately 2 mm into the surface. The microstructure, composition and the phases in the alloyed layer were investigated. The analysis showed that the layer consisted of distinct SiC and TiC particles embedded in the layers. The scanning electron microscope (SEM) showed that a good metallurgical bond between the particles and substrate was formed. The X-ray diffraction (XRD) and energy dispersive spectroscopy (EDS) analysis techniques were employed in the identification of the phases. The layer also contained solidified TiC dendrites, plate-like Al4SiC4 and some precipitates of Ti5Si2. The hardness of the layer was three times that of the un-reinforced substrate material en
dc.language.iso en en
dc.subject Alloys en
dc.subject Lasers en
dc.subject Aluminium en
dc.subject Optics en
dc.subject Energy dispersive spectroscopy en
dc.subject EDS en
dc.subject Scanning electron microscope en
dc.subject SEM en
dc.subject X-ray diffraction en
dc.subject XRD en
dc.subject YAG laser en
dc.title Microstructures of alloyed and dispersed hard particles in the aluminium surface en
dc.type Presentation en


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