论文信息 - RESIDUAL STRESS OPTIMISATION IN LASER REMELTED ARC SPRAYED COATINGS

RESIDUAL STRESS OPTIMISATION IN LASER REMELTED ARC SPRAYED COATINGS

Arc sprayed coatings obtained from cored wires are widely used for wear and corrosion protection and worn parts restoration due to the high flexibility concerning composition. Laser remelting can be used as a method for post treatment of deposited coatings and usually results in improvement of coating properties due to fine microstructure formation. However, the shrinkage during crystallization can be accompanied by the formation of residual tensile stresses in remelted layers, which can result in crack initiation. A mathematical model for prediction of residual stress distribution and crack formation in laser remelted coatings is developed.

H. Pokhmurska | V. Chekurin | B. Wielage | W. Kalita | A. Wank

[1] L. Pawłowski. Laser Treatment of Thermally Sprayed Coatings , 2002, International Thermal Spray Conference.

[2] E. Bielanska,et al. Tribological properties of arc sprayed coatings obtained from FeCrB and FeCr-based powder wires , 2002 .

[3] P. Vuoristo,et al. Improved sealing treatments for thick thermal barrier coatings , 2002 .

[4] V. Dovhunyk,et al. Effect of Friction on Phase Transitions in the Surface Layers of FeCrB + Al Gas-Thermal Coatings , 2000 .

[5] F. Schreiber,et al. Wires for arc- and high velocity flame spraying - wire design, materials and coating properties , 2000 .

[6] A. Pokhmurska,et al. Microstructure and properties of laser treated arc sprayed and plasma sprayed coatings , 2000 .