8 January 2015 Laser dispersing of WC and TiC powders in light metal alloys for wear resistance enhancement
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Proceedings Volume 9447, 18th International School on Quantum Electronics: Laser Physics and Applications; 94470G (2015) https://doi.org/10.1117/12.2176007
Event: Eighteenth International School on Quantum Electronics: Laser Physics and Applications, 2014, Sozopol, Bulgaria
Abstract
In this work, formation of the Metal Matrix Composite (MMC) surface layers on the titanium-based Ti-6Al-4V and aluminum-based Al 6061 alloys by means of laser dispersing of WC and TiC powder particles is investigated. In the process, the substrate surface is locally melted to the depths up to about several hundreds μm by the slightly defocused high power CO2 or disk Yb:YAG laser beam. Simultaneously, powder particles of irregular (TiC) or spherical (WC) shape and average size of about 100 microns are injected into the molten material by means of specialized, lateral nozzle. The single traces as well as surface layers consisting of several consecutive traces were produced. The influence of the process parameters, such as: laser beam intensity, scanning speed, powder feed-rate and substrate preheating temperature, on the properties of the composite layer was analyzed and discussed. The optical and SEM inspections of the produced MMC materials revealed the homogeneously distributed powder particles in the best samples obtained.
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Rafał Jendrzejewski, Gerard Śliwiński, "Laser dispersing of WC and TiC powders in light metal alloys for wear resistance enhancement", Proc. SPIE 9447, 18th International School on Quantum Electronics: Laser Physics and Applications, 94470G (8 January 2015); doi: 10.1117/12.2176007; https://doi.org/10.1117/12.2176007
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