TECHNOLOGICAL ASPECTS OF FRICTION TREATMENT OF PG-SR2 COATING FORMED BY LASER CLADDING

  • Natalya Nikolaevna Soboleva Institute of Engineering Science of the Ural Branch of the Russian Academy of Sciences
  • Aleksey Viktorovich Makarov M.N. Mikheev Institute of Metal Physics of the Ural Branch of the Russian Academy of Sciences
  • Irina Yurievna Malygina Institute of Engineering Science of the Ural Branch of the Russian Academy of Sciences
Keywords: laser cladding, NiCrBSi coatings, PG-SR2, friction treatment, profilometry, microindentation

Abstract

PG-SR2 powder having the Ni–Cr–B–Si alloying system is used for laser cladding on the parts operating in the conditions of wear, corrosion, erosion, and high temperatures. The extensive surface waviness and roughness resulting from laser cladding are currently eliminated by grinding with abrasive wheels. Previously, the authors showed the possibility of finishing friction treatment of the PG-SR2 coating with an indenter made of finely dispersed cubic boron nitride in the air under the load of 350 N. However, an increase in the load on the indenter during friction treatment can affect ambiguously. Besides, the state of the indenters after the friction treatment of the PG-SR2 coating has not been previously considered, what is one of the important aspects of the selection of technological parameters of friction treatment. Therefore, in the present work, the authors studied the hardness and quality of the PG-SR2 coating surface after the friction treatment under the loads on the indenter of 350 and 500 N, compared with the surface characteristics after the electro-polishing and grinding, and analyzed the surfaces of the indenters after such treatments. The study showed that during friction treatment under the load of 500 N, the processes of setting occur on the PG-SR2 coating surface leading to the formation of a surface with the increased roughness and preventing the maximum strain hardening of the coating. This causes the transfer of the coating material to the surface of the indenter tip. Chemical composition on the indenter surface after the friction treatment under the load of 350 N does not change. Moreover, such treatment forms the hardest and high-quality surface with the reduced roughness parameters and can be recommended as a finishing hardening operation for producing parts with the PG-SR2 coating.

Author Biographies

Natalya Nikolaevna Soboleva, Institute of Engineering Science of the Ural Branch of the Russian Academy of Sciences

PhD (Engineering), researcher of the Laboratory of Constructional Material Science

Aleksey Viktorovich Makarov, M.N. Mikheev Institute of Metal Physics of the Ural Branch of the Russian Academy of Sciences

Doctor of Sciences (Engineering), Head of Materials Science Department, Head of the Laboratory of Mechanical Properties

Irina Yurievna Malygina, Institute of Engineering Science of the Ural Branch of the Russian Academy of Sciences

PhD (Engineering), senior researcher of the Laboratory of Constructional Material Science

References

Brückner F., Lepski D. Laser Cladding. Springer Series in Materials Science, 2017, vol. 119, pp. 263–306.

Gao W., Chang C., Li G., Xue Y., Wang J., Zhang Z., Lin X. Study on the laser cladding of FeCrNi coating. Optik, 2019, vol. 178, pp. 950–957.

Tobar M.J., Álvares C., Amado J.V., Rodríguez G., Yáñez A. Morphology and characterization of laser clad composite NiCrBSi–WC coatings on stainless steel. Surface and Coatings Technology, 2006, vol. 200, pp. 6313–6317.

Tamanna N., Crouch R., Naher S. Progress in numerical simulation of the laser cladding process. Optics and Lasers in Engineering, 2019, vol. 122, pp. 151–163.

d’Oliveira A.S.C.M., Vilar R., Feder C.G. High temperature behavior of plasma transferred arc and laser Co-based alloy coatings. Applied Surface Science, 2002, vol. 201, pp. 154–160.

Li C., Zhang Q., Wang F., Deng P., Lu Q., Zhang Y., Li S., Ma P., Li W., Wang Y. Microstructure and wear behaviors of WC-Ni coatings fabricated by laser cladding under high frequency micro-vibration. Applied Surface Science, 2019, vol. 485, pp. 513–519.

Navas С., Colaco R., De Damborenea J., Vilar R. Abrasive wear behavior of laser clad and flame sprayed-melted NiCrBSi coatings. Surface and Coatings Technology, 2006, vol. 200, pp. 6854–6862.

Guo Ch., Zhou J., Chen J., Zhao J., Yu Y., Zhou H. High temperature wear resistance of laser cladding NiCrBSi and NiCrBSi/WC-Ni composite coatings. Wear, 2011, vol. 270, pp. 492–498.

González R., Cadenas M., Fernández R., Cortizo J.L., Rodríguez E. Wear behaviour of flame sprayed NiCrBSi coating remelted by flame or by laser. Wear, 2007, vol. 262, pp. 301–307.

Singh R., Kumar D., Mishra S.K., Tiwari S.K. Laser cladding of Stellite 6 on stainless steel to enhance solid particle erosion and cavitation resistance. Surface and Coatings Technology, 2014, vol. 351, pp. 87–97.

Loskutov V.V. Shlifovanie metallov [Metal grinding]. Moskow, Mashinostroenie Publ., 1985. 256 p.

Makarov A.V., Soboleva N.N., Savray R.A., Malygina I.Yu. The improvement of micromechanical properties and wear resistance of chrome-nickel laser coating using the finishing friction treatment. Vektor nauki Tolyattinskogo gosudarstvennogo universiteta, 2015, no. 4, pp. 60–67.

Soboleva N.N., Makarov A.V., Malygina I.Yu. The influence of frictional theatment on the micromechanical properties of NiCrBSi coating produced by laser cladding. Vektor nauki Tolyattinskogo gosudarstvennogo universiteta, 2017, no. 4, pp. 135–140.

Skorynina P.A., Makarov A.V., Yurovskikh A.S., Osintseva A.L. The influence of temperature of nanostructuring frictional treatment on the structural-phase state, hardening and surface quality of austenitic chromium-nickel steel. Vektor nauki Tolyattinskogo gosudarstvennogo universiteta, 2017, no. 3, pp. 103–109.

Kuznetsov V.P., Makarov A.V., Psakhie S.G., Savrai R.A., Malygina I.Yu., Davydova N.A. Tribological aspects in nanostructuring burnishing of structural steels. Physical mesomechanics, 2014, vol. 17, no. 4, pp. 250–264.

Smirnov S. V., Konovalov D. A., Kalashnikov S. T., Smirnova E. O. Studying the Adhesion Strength and Mechanical Properties of Coatings on Aluminum-Magnesium Alloy Samples. Diagnostics, Resource and Mechanics of materials and structures, 2018, vol. 5, pp. 106–115.

GOST 2789-73. Surface roughness. Parameters and characteristics.

Zaitseva A.O., Zakharova N.V. The roughness parameters in accordance with the requirements of the international standard. Aktualnye problemy aviatsii i kosmonavtiki, 2015, vol. 2, no. 11, pp. 83–84.

GOST R ISO 4287-2014. Geometrical Product Specifications (GPS). Surface texture. Profile method. Terms, definitions and surface texture parameters.

Bogutsky B.V., Dzyubaba R.N., Novoselov Yu.K. The influence of technological factors on the parameters of surface roughness when working with abrasive tools. Mekhaniki XXI veku, 2017, no. 16, pp. 33–37.

Published
2019-09-30
Section
Technical Sciences