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Vol. 10 (2023)

About Wave Nature of the Formation of Gradient and Microcomposite Zones Near Non-Metallic Inclusions During Laser Processing of the Steels

April 28, 2023


Abstract: The goal of this investigation was to research the wave nature of the formation of gradient and composite zones near non-metallic inclusions during laser treatment of the steels. The materials for investigation were commercial steels containing different non-metallic inclusions. The specimens of different steels were exposed to laser beaming on the installations GOS-30M. The research methods were applied: petrography, X-ray microscopy (MS-46 Cameca, "Nanolab - 7") and optical microscopy (Neophot-31) to study steel matrix near non-metallic inclusions and to identify of the inclusions. Nanohardness of the steel matrix near inclusions ("Nano Indenter II") was analyzed. Peculiarities of wave saturation of the steel matrix by chemical elements of non-metallic inclusions during laser action were investigated. It was shown the role of wave relaxation of stresses in the formation of cascade type structure of steel matrix near non-metallic inclusions. The features of the formation of gradient and micro composite saturation zones of cascade type in a steel matrix under conditions of abnormal mass transfer from nonmetallic inclusions during laser processing are discussed. It has been established that the formation of gradient saturation zones with a cascade and “spot” distribution of elements and nanohardness is due to the wave nature of the relaxation of thermal and deformation stresses near non-metallic inclusions at the time of laser exposure. The difference in the rates of abnormal mass transfer of chemical elements of non-metallic inclusions into a steel matrix at the moment of laser melting is shown, which is associated with different solubility and mobility of the atoms of alloying elements in liquid iron.


  1. Kannatey-Asibu EJr. Principles of Laser Materials Processing. Hoboken, NJ: John Wiley & Sons; 2009.
  2. Steen, WM, Mazumder J. Laser Material Processing. 4th ed. London: Springer; 2010.
  3. Dowden J, Schulz W. The Theory of Laser Materials Processing: Heat and Mass Transfer in Modern Technology. 2nd ed. Berlin/Heidelberg: Springer; 2017.
  4. Gladush GG, Smurov I. Physics of Laser Materials Processing: Theory and Experiment. Berlin/Heidelberg: Springer; 2011.
  5. Akhtar SS, Yilbas BS. Numerical and experimental investigations of temperature and stress fields. In Laser treatment of steel surfaces. Comprehensive Materials Processing. Oxford: Waltham, MA, USA, 2014; p. 25-46.
  6. Gubenko SI. Analysis of the effect of nonmetallic inclusions on steel strengthening upon laser treatment. Steel in Translation 2021; 51(3): 217-28.
  7. Gubenko S. Melting and Crystallization of Nonmetallic Inclusions and Steel Matrix in the Course of Laser Treatment. Material Science 2010; 46(3): 365-71.
  8. Gubenko SI. Possibilities of transformation of non-metallic inclusions and interphase inclusion-matrix boundaries under high-energy treatments. Metal Physics, New Technologies 2014; 36(3): 287-315.
  9. Gubenko S. Strucrural Effects near Nonmetallic Inclusions in Laser Treatment of Steels. Materials Science 2000; 35(6): 818-27.
  10. Gubenko SI. Zones of contact interaction in steel matrix near inclusions under the laser action. Materials Science 2011; 46(4): 448-52.
  11. Gubenko S. Formation of Gradiental and Composite Zones Near Non-Metallic Inclusions Under Laser Treatment of Steels. Proceedings of the 9th International Congress «Mechanics, Technologies, Materials»; 2012: Varna, Bulgaria; 2012: р. 19-22.
  12. Bekrenev AN. Mass transport in metals under intensive impulse reactions. J. Phys. Chem. Solids 2002; 63: 1627-31.
  13. Mazanko VF, Kozlov AV, Riasniy AV, Prokopenko GI, Piskun NA. The mass transfer in metals at ultrasonic treatment. Metallofiz. Noveishie Tekhnologes 2001; 23: 232-4.
  14. Filatov A, Pogorelov A, Kropachev D, Dmitrichenko O. Dislocation mass-transfer and electrical phenomena in metals under pulsed laser influence. Defect Diffus. Forum 2015; 363: 173-7.
  15. Mazanko VF, Mironov DV, Hertzriken DS, Bevz, VP. Influence of simultaneous action of an electric current and plastic deformation by compression on migration of atoms in copper and nickel. Metallofiz. Noveishie Tekhnologes 2007; 29: 483-94.
  16. Kuznetsov LI. Screening properties of the erosion torch and pressure oscillations at a laser-irradiated target. SPIE 1990; 1440: 222-8.
  17. Samsonov GV, Pryadko IF, Pryadko LF. Electronic localization in a solid. Moscow: Nauka; 1976.
  18. Naidich YV, Perevertailo VM, Grigorenko NF. Capillary phenomena in the processes of growth and melting of crystals. Kyiv: Naukova Dumka; 1983.
  19. Sano Y, Akita K, Sano T. A mechanism for inducing compressive residual stresses on a surface by laser peening without coating. Metals 2020; 10: 816-22.
  20. Gubenko S. The features of recrystallization of steels under laser action. Material science. Nonequilibrium phase transformations 2022; 1(5): 27-9.
  21. Gertsriken DS, Ignatenko AI, Mazanko VF, Mironova OA, Fal'chenko YV, Kharchenko GK. Determining the duration of mass transfer and the temperature of metal subjected to pulsed deformation. Phys. Met. Metallogr. 2005; 99: 187-93.
  22. Mazanko VF, Gertzriken DS, Bevz VP, Mironov VM, Mironova OA. Mass transfer under the shock compression in metal-defects systems with interlayer. Metallofiz. Noveishie Tekhnol. 2010; 32: 1267-75.
  23. Vasil'ev LS. To the theory of the anomalously high diffusion rate in metals under shock action: I. Basic equations of diffusion mass transfer upon plastic deformation of materials. Phys. Met. Metallogr. 2009; 107: 330-40.
  24. Smirnov LI. Transport of interstitial atoms with an elastic wave in metals. Phys. Met. Metallogr. 2000; 89: 327-31.
  25. Ershov GS, Chernyakov VA. Structure and properties of liquid and solid metals. Moscow: Metallurgy; 1978.
  26. Gubenko S. Influence of Laser Treatment on the Strength of "Inclusion-Steel Matrix" Interfaces Under Plastic Deformation. Materials Science 2017; 53 (1): 36-41.