Mabhali, Luyolo ABSacks, NPityana, Sisa L2013-04-172013-04-172012-06Mabhali, L.A.B., Sacks, N. and Pityana, S. 2012. Three body abrasion of laser surface alloyed aluminium AA1200. Wear, vol. 290-291, pp 1-90043-1648http://www.sciencedirect.com/science/article/pii/S0043164812002098http://hdl.handle.net/10204/6664Copyright: 2012 Elsevier. This is an ABSTRACT ONLY. The definitive version is published in Wear, vol. 290-291, pp 1-9Laser surface alloying of aluminium AA1200 was performed with a 4 kW Nd:YAG laser to improve the abrasion wear resistance. Aluminium surfaces reinforced with metal matrix composites and intermetallic phases were achieved. The phases present depended on the composition of the alloying powder mixture. The wear performance of the alloyed surfaces was characterised using an ASTM G65 three body dry abrasion apparatus. A maximum 82% improvement in the wear resistance of the pure aluminium was achieved with a 40 wt% Ni+20 wt% Ti+40 wt% SiC composition. The three alloys which had the best wear resistance were all produced with a composition of 40 wt% SiC and Ti and Ni powders ranging from 20 to 40 wt%. No direct correlation was observed between hardness and wear resistance. Microstructural examination showed that the main wear mechanisms were intense plastic deformation with micro-fracture of the SiC particles and intermetallic phases. The wear behaviour is mainly determined by the response of the different alloy phases, either independently or in combination, to the action of the abrasive particles and the precise nature of this response is complex and requires further study.enLaser surface alloyingAluminium AA1200Metal-matrix compositesIntermetallicsThree body-body abrasionArticleMabhali, L. A., Sacks, N., & Pityana, S. L. (2012). Three body abrasion of laser surface alloyed aluminium AA1200. http://hdl.handle.net/10204/6664Mabhali, Luyolo AB, N Sacks, and Sisa L Pityana "Three body abrasion of laser surface alloyed aluminium AA1200." (2012) http://hdl.handle.net/10204/6664Mabhali LA, Sacks N, Pityana SL. Three body abrasion of laser surface alloyed aluminium AA1200. 2012; http://hdl.handle.net/10204/6664.TY - Article AU - Mabhali, Luyolo AB AU - Sacks, N AU - Pityana, Sisa L AB - Laser surface alloying of aluminium AA1200 was performed with a 4 kW Nd:YAG laser to improve the abrasion wear resistance. Aluminium surfaces reinforced with metal matrix composites and intermetallic phases were achieved. The phases present depended on the composition of the alloying powder mixture. The wear performance of the alloyed surfaces was characterised using an ASTM G65 three body dry abrasion apparatus. A maximum 82% improvement in the wear resistance of the pure aluminium was achieved with a 40 wt% Ni+20 wt% Ti+40 wt% SiC composition. The three alloys which had the best wear resistance were all produced with a composition of 40 wt% SiC and Ti and Ni powders ranging from 20 to 40 wt%. No direct correlation was observed between hardness and wear resistance. Microstructural examination showed that the main wear mechanisms were intense plastic deformation with micro-fracture of the SiC particles and intermetallic phases. The wear behaviour is mainly determined by the response of the different alloy phases, either independently or in combination, to the action of the abrasive particles and the precise nature of this response is complex and requires further study. DA - 2012-06 DB - ResearchSpace DP - CSIR KW - Laser surface alloying KW - Aluminium AA1200 KW - Metal-matrix composites KW - Intermetallics KW - Three body-body abrasion LK - https://researchspace.csir.co.za PY - 2012 SM - 0043-1648 T1 - Three body abrasion of laser surface alloyed aluminium AA1200 TI - Three body abrasion of laser surface alloyed aluminium AA1200 UR - http://hdl.handle.net/10204/6664 ER -