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Proceedings Paper

Direct laser cladding of Ni-based alloy powder for industrial applications
Author(s): Rafal Jendrzejewski; Gerard Sliwinski; Ana Conde; Juan J. de Damborenea
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Paper Abstract

Coatings of the nickel-based Metco 16C on the chromium steel substrate of a composition designed for the steam turbine blades are produced in a direct laser cladding process. A cw 1.2 kW CO2 laser stand equipped with a multi-stream nozzle mounted co-axially with the focusing optics is applied. Experiments are performed for the non-preheated as well as the preheated base material. Differences in microstructure, chemical composition, and in the cracking susceptibility between coatings produced on preheated (800-900K) and non-preheated substrates are analyzed by means of scanning electron microscopy (SEM) and the Energy Dispersive X-ray Spectroscopy (XEDS). Results indicate a significant improvement of the clad quality with the increase of preheating temperature. The presence of Fe in the coating is ascribed to migration from substrate due to preheating.

Paper Details

Date Published: 10 November 2003
PDF: 4 pages
Proc. SPIE 5120, XIV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, (10 November 2003); doi: 10.1117/12.515844
Show Author Affiliations
Rafal Jendrzejewski, Institute of Fluid-Flow Machinery (Poland)
Gerard Sliwinski, Institute of Fluid-Flow Machinery (Poland)
Ana Conde, Consejo Superior de Investigaciones Cientificas (Spain)
Juan J. de Damborenea, Consejo Superior de Investigaciones Cientificas (Spain)


Published in SPIE Proceedings Vol. 5120:
XIV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers
Krzysztof M. Abramski; Edward F. Plinski; Wieslaw Wolinski, Editor(s)

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