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Proceedings Paper

Laser dispersing of WC and TiC powders in light metal alloys for wear resistance enhancement
Author(s): Rafał Jendrzejewski; Gerard Śliwiński
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Paper 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.

Paper Details

Date Published: 8 January 2015
PDF: 6 pages
Proc. SPIE 9447, 18th International School on Quantum Electronics: Laser Physics and Applications, 94470G (8 January 2015); doi: 10.1117/12.2176007
Show Author Affiliations
Rafał Jendrzejewski, The Szewalski Institute of Fluid-Flow Machinery (Poland)
Gerard Śliwiński, The Szewalski Institute of Fluid-Flow Machinery (Poland)

Published in SPIE Proceedings Vol. 9447:
18th International School on Quantum Electronics: Laser Physics and Applications
Tanja Dreischuh; Sanka Gateva; Alexandros Serafetinides, Editor(s)

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