Temperature and stress fields during laser cladding of stellite protective coatings

Rafa? Jendrzejewski; Gerard Sliwiński; Marek Krawczuk; Wiesław M. Ostachowicz

doi:10.1117/12.726545

23 January 2007 Temperature and stress fields during laser cladding of stellite protective coatings

Rafa? Jendrzejewski, Gerard Sliwiński, Marek Krawczuk, Wiesław M. Ostachowicz

Proceedings Volume 6598, Laser Technology VIII: Applications of Lasers; 65980E (2007) https://doi.org/10.1117/12.726545
Event: Laser Technology VIII, 2006, Szczecin, Poland

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.

Citation Download Citation

Rafa? Jendrzejewski, Gerard Sliwiński, Marek Krawczuk, and Wiesław M. Ostachowicz "Temperature and stress fields during laser cladding of stellite protective coatings", Proc. SPIE 6598, Laser Technology VIII: Applications of Lasers, 65980E (23 January 2007); https://doi.org/10.1117/12.726545

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