Modification of Steel Surface Using the Laser Energy Olga Chudina


The article is devoted to surface hardening of steels by alloying with the use of laser energy. Two combined technologies were proposed: first—laser alloying by nitride-forming elements followed by nitriding, and secondthe local laser alloying followed by metallization in atmosphere of ammonia. It is shown that laser alloying in continuous radiation forms a layer with a homogeneous fine-grained structure with thickness of 600 microns. The subsequent nitriding increases the microhardness of the surface layer of low-carbon steels to 20,000 MPa, increases wear-resistance in a 3 - 15 times and crack resistance in a 1.5 times. Two-stage technology of metallization allows getting diffusion layer on the surface of steels with the thickness, which is 1.5 - 2 times higher than after traditional metallization. In addition, this method of surface modification can significantly reduce the temperature of diffusion metallization and reduce the processing time to 3 hours. The optimal regimes of both technologies, which provide homogeneous multiphase diffusion layers with high hardness and wear resistance, were determined.

Share and Cite:

Chudina, O. (2014) Modification of Steel Surface Using the Laser Energy Olga Chudina. Journal of Surface Engineered Materials and Advanced Technology, 4, 181-188. doi: 10.4236/jsemat.2014.44021.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] Rykalin, N.N., Uglov, A.A., Zuev, I.V. and Kokora, A.N. (1985) Laser and Electron Beam Treatment of Materials: Handbook. Mashinostroenie, Moscow, 496.
[2] Chudina, O.V. and Brezhnev, A.A. (2010) Surface Alloying of Carbon Steels by Laser Heating. Strengthening Technologies and Coatings, No. 4, 10-16.
[3] Solind, A., De Sanctis, M., Paganini, L., et al. (1984) Origin and Development of Residual Stresses Induced by Laser Surface-Hardening Treatments. Journal of Heat Treating, 3, 193-204.
[4] Grigoryan, A.G., Safonov, A.N., Mayorov, V.S., Baskov, A.F. and Ivashov, G.P. (1987) Distribution of Residual Stresses on the Surface of Steel Hardened by Continuous CO2 Laser. Metallovedenie i Termicheskaya Obrabotka Metallov, 9, 45-49.
[5] Brover, A.V. (2005) Effect of Surface Heat Treatment Using of Concentrated Energy Flows on the Structural Strength of Steel. Strengthening Technology and Coatings, 4, 22-25.

Copyright © 2023 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.