Научная электронная библиотека ULRICH'S Periodicals Directory

Сибирский государственный университет
науки и технологий имени академика М.Ф. Решетнева

Сибирский аэрокосмический журнал
ISSN 2712-8970 (Print) ISSN 2782-5760 (on-line)

Сведения об образовательной организации

UDK 519.6:532.517+621.7+669.17
NUMERICAL SIMULATION OF MODIFYING MATERIAL DISTRIBUTION DURING THE IMPULSE INDUCTION HEATING OF METAL SURFACE
V. N. Popov
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS 4/1, Institutskaya Str., Novosibirsk, 630090, Russian Federation
Method of improvement of operational properties of surfaces is considered. Under study is the applicability of highfrequency electromagnetic field for metal heating and melting with a view to its subsequent modification. 2D numerical modeling of the processes during the modification of the substrate surface metal layer is carried out. The substrate surface is covered with a layer of specially prepared nano-size particles of refractory compounds, which are active crystallization centers after the penetration into the melt. The distribution of the electromagnetic energy in the metal is described by empirical formulas. The proposed mathematical model is used to consider the processes including heating, phase transition and heat transfer in the molten metal, the nucleation and growth of the solid phase in the presence of a modifier material in the melt. Melting of the metal is considered at the Stephan’s approximation, and during solidification all nano-size particles are assumed to be centers of volume-consecutive crystallization. The flow in the liquid is described by the Navier-Stokes equations in the Boussinesq approximation. The movement of the markers models the distribution of nano-size particles in the melt. According to the results of numerical experiments, the flow structure in the melt was evaluated versus the characteristics of induction heating and the amount of surface-active impurities in the metal. The modes of the induction-pulse action are detected: they promote creating the flows for the homogeneous distribution of modifying particles in the melt. Found that the application of high frequency electromagnetic field for heating and melting of metals allows to modify the metal deeper in comparison with the use of a laser.
Keywords: numerical simulation, metal modification, impulse induction heating, heat transfer, nano-size refractory particles.
References

1. Montealegre M. A., Castro G., Rey P., Arias J. L., Vázquez P., González M. Surface treatments by laser technology. Contemporary Materials. 2010, Vol. 1, P. 19–30. DOI: 10.5767/anurs.cmat.100101.en.019M.

2. Saburov V. P., Cherepanov A. N., Zhukov M. F. et al. Plazmokhemicheskiy sintez ultradispersnykh poroshkov i ikh primenenie dlya modifitzirovaniya metallov i splavov [Plasma chemical synthesis of ultra-dispersed powders and its application for metal and alloys modification]. Novosibirsk, Nauka Publ., 1996, 312 p. (In Russ.).

3. Marusin V. V. [High-frequency pulse quenching details]. Obrabotka metallov. 2004, No. 2, P. 14–15 (In Russ.).

4. Solonenko O. P., Cherepanov A. N., Marusin V. V., Poluboyarov V. A. [Combined technologies of obtaining promising powder materials, coating and hardening of the surface layers with controlled nano - and microstructure]. Tyazheloe mashinostroenie. 2007, No. 10, P. 10–13 (In Russ.).

5. He X., Fuerschbach P. W., DebRoy T. Heat transfer and fluid flow during laser spot welding of 304 stainless steel. J. Phys. D: Appl. Phys. 2003, Vol. 36, P. 1388–1398. DOI: 10.1088/0022-3727/36/12/306.

6. Ribic B., Tsukamoto S., Rai R., DebRoy T. Role of surface active elements during keyhole mode laser welding. Journal of Physics D: Applied Physics. 2011, Vol. 44(48), article № 485203. DOI:10.1088/0022-3727/44/48/485203.

7. Cherepanov A. N., Popov V. N. Numerical analysis of the influence of surface-active substance in the melt on the distribution of modifying particles and crystallization at the treatment of metal surface by a laser pulse. Thermophysics and Aeromechanics. 2014, Vol. 21, No. 3, P. 355–363. DOI: 10.1134/S0869864314030093.

8. Donghua Dai, Dongdong Gu. Influence of thermodynamics within molten pool on migration and distribution state of reinforcement during selective laser melting of AlN/AlSi10Mg composites. International Journal of Machine Tools & Manufacture. 2016, Vol. 100, P. 14–24. DOI: 10.1016/j.ijmachtools.2015.10.004.

9. Sahoo P., DebRoy T., McNallan M.J. Surface tension of binary metal-surface active solute systems under conditions relevant to welding metallurgy. Metall. Trans. B. 1988, Vol. 19B, P. 483–491. DOI: 10.1007/BF02657748.

10. Ehlen G., Ludwig A., Sahm P. R. Simulation of Time-Dependent Pool Shape during Laser Spot Welding: Transient Effects. Metall. Mater. Trans. A. 2003, Vol. 34A, P. 2947–2961. DOI: 10.1007/s11661-003-0194-x.

11. Pavlov N. A. Inzhenernye teplovye raschety indukzionnykh nagrevateley [Engineering thermal calculations of induction heaters]. Moscow, Energiya Publ., 1978, 120 p.

12. Budak B. M., Solov’eva E. N., Uspenskii A. B. A difference method with coefficient smoothing for the solution of Stefan problems. USSR Comput. Math. Math. Phys. 1965, Vol. 5, No. 5, P. 59–76.

13. Höche D., Müller S., Rapin G. et аl. Marangoni Convection during Free Electron Laser Nitriding of Titanium. Metall. Mater. Trans. B. 2009, Vol. 40, No. 4, P. 497–507. DOI: 10.1007/s11663-009-9243-1.

14. Baladin G. F. Osnovy teoryi formirovaniya slitka [Fundamentals of the theory of ingot formation]. Moscow, Mashinostroenie Publ., 1979, 335 p.

15. Harlow F. H., Welch J. E. Numerical calculation of time-depend viscous incompressible flow of fluid with free surface. Phys. Fluids. 1965, Vol. 8, P. 2182–2189.

16. Patankar S. V., Spalding D. B. A Calculation Procedure for Heat, Mass and Momentum Transfer in Three- Dimensional Parabolic Flows. Int. J. Heat Mass Trans. 1972, Vol. 15, P. 1787–1806.

17. Chorin A. J. A numerical method for solving incompressible viscous flow problems. J. Comput. Phys. 1967, Vol. 2, P. 12–26.


Popov Vladimir Nikolaevich – Dr. Sc., senior researcher, chief scientific officer, Khristianovich Institute of

Theoretical and Applied Mechanics SB RAS. E-mail: popov@itam.nsc.ru.