DSpace
 

Researchspace >
General science, engineering & technology >
General science, engineering & technology >
General science, engineering & technology >

Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/4095

Title: Microstructures of alloyed and dispersed hard particles in the aluminium surface
Authors: Pityana, S
Keywords: Alloys
Lasers
Aluminium
Optics
Energy dispersive spectroscopy
EDS
Scanning electron microscope
SEM
X-ray diffraction
XRD
YAG laser
Issue Date: Mar-2010
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
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
Description: 4th Pacific International Conference on Applications of Lasers and Optics Shangri-La Hotel (Wuhan, Peoples Republic of China), 23-25 March 2010
URI: http://hdl.handle.net/10204/4095
Appears in Collections:Laser materials processing
General science, engineering & technology

Files in This Item:

File Description SizeFormat
Pityana-2010.pdf2.56 MBAdobe PDFView/Open
View Statistics

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback