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Proceedings Paper

Temperature and stress fields during laser cladding of stellite protective coatings
Author(s): Rafa? Jendrzejewski; Gerard Sliwiński; Marek Krawczuk; Wiesław M. Ostachowicz
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Paper Abstract

The time dependent temperature and strain-stress fields are numerically calculated for the laser cladding of protective stellite SF6 coatings on the X10Cr13 chromium steel. The temperature dependent material properties and also effects of the base preheating and time delay between cladding of the consecutive layers are taken into account. Results of the model calculations indicate that the micro-cracking susceptibility of the coating is smaller for the preheated base. In the case of the substrate initial temperature of 600 °C the calculated strain stresses lie below the limit of the stellite tensile strength. This is confirmed in experiment by the crack-free coatings while for the samples cladded on the non-preheated substrate cracks are produced. An increase of the cracking susceptibility with prolonged time delay between preparation cycles of the consecutive layers is evidenced by modelling, which agrees with experiment, too.

Paper Details

Date Published: 23 January 2007
PDF: 5 pages
Proc. SPIE 6598, Laser Technology VIII: Applications of Lasers, 65980E (23 January 2007); doi: 10.1117/12.726545
Show Author Affiliations
Rafa? Jendrzejewski, The Szewalski Institute of Fluid-Flow Machinery (Poland)
Gerard Sliwiński, The Szewalski Institute of Fluid-Flow Machinery (Poland)
Marek Krawczuk, Gdansk Univ. of Technology (Poland)
Wiesław M. Ostachowicz, The Szewalski Institute of Fluid-Flow Machinery (Poland)


Published in SPIE Proceedings Vol. 6598:
Laser Technology VIII: Applications of Lasers

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