Popoola, APPityana, Sisa L2011-03-282011-03-282010-10Popoola, AP and Pityana, S. 2010. Laser surface alloying (LSA) of aluminium (AA 1200) with TiB2 for hardness improvement. 29th International Congress on Applications of Lasers & Electro-Optics (ICALEO). Anaheim, California, US – Anaheim, 26 - 30 September 2010, pp 281-288http://hdl.handle.net/10204/493129th International Congress on Applications of Lasers & Electro-Optics (ICALEO). Anaheim, California, US – Anaheim, 26 - 30 September 2010The present work deals with the development of Aluminium metal matrix composite (MMC) using TiB2 reinforcement. The aim is to improve the microhardness property of the substrate. The surface of the aluminium was sand blasted to improve its laser energy absorption and simultaneous deposition of the ceramic powder onto the surface of the substrate was carried out using a Rofin Nd: YAG laser with an Argon shield environment to prevention oxidation. The laser processing parameters were varied. The characterization of the alloyed surfaces MMC was carried out by Optical Microscopy (OPM), Scanning Electron Microscopy (SEM) and X-ray Diffraction (XRD). The microstructure of the alloyed layer shows that the ceramic powder was well dispersed within the Al-matrix. Good metallurgical bonds were evident. Microhardness measurements were carried out. The maximum depth attained was 1.17 mm. There was a microhardness increase from that of substrate which is 24±0.4 HV to that of the MMC layer 58.0±0.2 HV.enLaser surface alloyingAluminiumElectro opticsLasersMetal matrix compositeOptical microscopyScanning electron microscopyICALEO 2010Conference PresentationPopoola, A., & Pityana, S. L. (2010). Laser surface alloying (LSA) of aluminium (AA 1200) with TiB2 for hardness improvement. http://hdl.handle.net/10204/4931Popoola, AP, and Sisa L Pityana. "Laser surface alloying (LSA) of aluminium (AA 1200) with TiB2 for hardness improvement." (2010): http://hdl.handle.net/10204/4931Popoola A, Pityana SL, Laser surface alloying (LSA) of aluminium (AA 1200) with TiB2 for hardness improvement; 2010. http://hdl.handle.net/10204/4931 .TY - Conference Presentation AU - Popoola, AP AU - Pityana, Sisa L AB - The present work deals with the development of Aluminium metal matrix composite (MMC) using TiB2 reinforcement. The aim is to improve the microhardness property of the substrate. The surface of the aluminium was sand blasted to improve its laser energy absorption and simultaneous deposition of the ceramic powder onto the surface of the substrate was carried out using a Rofin Nd: YAG laser with an Argon shield environment to prevention oxidation. The laser processing parameters were varied. The characterization of the alloyed surfaces MMC was carried out by Optical Microscopy (OPM), Scanning Electron Microscopy (SEM) and X-ray Diffraction (XRD). The microstructure of the alloyed layer shows that the ceramic powder was well dispersed within the Al-matrix. Good metallurgical bonds were evident. Microhardness measurements were carried out. The maximum depth attained was 1.17 mm. There was a microhardness increase from that of substrate which is 24±0.4 HV to that of the MMC layer 58.0±0.2 HV. DA - 2010-10 DB - ResearchSpace DP - CSIR KW - Laser surface alloying KW - Aluminium KW - Electro optics KW - Lasers KW - Metal matrix composite KW - Optical microscopy KW - Scanning electron microscopy KW - ICALEO 2010 LK - https://researchspace.csir.co.za PY - 2010 T1 - Laser surface alloying (LSA) of aluminium (AA 1200) with TiB2 for hardness improvement TI - Laser surface alloying (LSA) of aluminium (AA 1200) with TiB2 for hardness improvement UR - http://hdl.handle.net/10204/4931 ER -