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Show simple item record Mabhali, Luyolo AB Pityana, S Sacks, N 2011-02-03T12:35:04Z 2011-02-03T12:35:04Z 2010-11
dc.identifier.citation Mabhali, L.A.B., Pityana, S and Sacks, N. 2010. Laser alloying of Al with mixed Ni, Ti and SiC powders. Journal of Laser Applications, 22(4), pp 121-126. en_US
dc.identifier.issn 1042-346X
dc.description Copyright: 2010 Laser Institute of America. This is the pre print version of the work. The definitive version is published in Laser alloying of Al with mixed Ni, Ti and SiC powders, Vol 22(4), pp 121-126 en_US
dc.description.abstract Laser alloying of aluminium AA1200 was performed with a 4.4kW Rofin Sinar Nd:YAG laser to improve the surface hardness. Alloying was carried out by depositing Ni, Ti and SiC powders of different weight ratios on the aluminium substrate. The aim was to form surfaces on aluminium reinforced with metal matrix composites and intermetallic phases. The laser parameters used were 4kW power and 10mm/s laser scanning speed. The microstructures formed were examined using optical and scanning electron microscopes and the phases were identified with XRD and EDX analytical techniques. Preliminary results showed that the microstructure of the alloyed layer depends on the content of Ni, Ti and SiC in the deposited powder mixture. The distribution of the SiC particles was not homogeneous. Intermetallic phases were formed between Al-Ni-Ti-SiC during laser alloying. An increase in surface hardness was achieved after laser alloying. A surface hardness of approximately 356.8±43.4 HV0.1 was achieved after alloying with a powder containing 70wt%Ni, 20wt%Ti and 10wt%SiC. The increase in hardness was attributed to the formation of the intermetallic phases. en_US
dc.language.iso en en_US
dc.publisher Laser Institute of America en_US
dc.relation.ispartofseries Journal Article;
dc.subject Laser alloying en_US
dc.subject Aluminum en_US
dc.subject Nickel en_US
dc.subject Titanium en_US
dc.subject Chemical engineering en_US
dc.subject Silicon carbide en_US
dc.subject Metal matrix composite en_US
dc.subject Intermetallic phases en_US
dc.subject Laser applications en_US
dc.title Laser alloying of Al with mixed Ni, Ti and SiC powders en_US
dc.type Article en_US

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