Phase Composition and Defect Substructure of Strengthening Layer Surfaced on Low Alloyed Steel

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The microstructure and microhardness distribution in surface of low carbon Hardox 450 steel coated with alloyed powder wires of different chemical compositions are studied. It is shown that the microhardness of 6-8 mm thickness surfaced layer exceeds that of base metal by more than 2 times. The increased mechanical properties of surfaced layer are caused by the submicro and nanoscale dispersed martensite, containing the niobium carbides Nb2C, NbC and iron borides Fe2B. In the bulk plates a dislocation substructure of the net-like type with scalar dislocation density of 1011 cm-2 is observed. The layer surfaced with the wire containing B possesses the highest hardness. The possible mechanisms of niobium and boron carbides formation in surfacing are discussed.

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Edited by:

Mikhail D. Starostenkov, Aleksandr I. Potekaev, Sergey V. Dmitriev and Prof. P. Ya. Tabakov

Pages:

28-33

Citation:

Y. F. Ivanov et al., "Phase Composition and Defect Substructure of Strengthening Layer Surfaced on Low Alloyed Steel", Journal of Metastable and Nanocrystalline Materials, Vol. 30, pp. 28-33, 2018

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January 2018

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[1] M. Kirchgaßner, E. Badisch and F. Franek, Behaviour of iron-based hardfacing alloys under abrasion and impact, Wear, 265 (2008) 772–779.

DOI: https://doi.org/10.1016/j.wear.2008.01.004

[2] P. F. Mendez, N. Barnes, K. Bell, S. D. Borle, S. S. Gajapathi, S. D. Guest, H. Izadi, A. K. Gol and G. Wood, Welding processes for wear resistant overlays, J. Manuf. Process. 16 (2014) 4–25.

DOI: https://doi.org/10.1016/j.jmapro.2013.06.011

[3] R. Zahiri, R. Sundaramoorthy, P. Lysz and C. Subramanian, Hardfacing using ferro-alloy powder mixtures by submerged arc welding, Surface and Coatings Technology, 260 (2014) 220–229.

DOI: https://doi.org/10.1016/j.surfcoat.2014.08.076

[4] W. Wu, L. Y. Hwu, D. Y. Lin and J. L. Lee, The relationship between alloying elements and retained austenite in martensitic stainless steel welds, Scripta Materialia 42 (2000) 1071–1076.

DOI: https://doi.org/10.1016/s1359-6462(00)00339-0

[5] O. Yilmaz, M. Özenba and S. Buytoz, Microstructural characteristics of gas tungsten arc synthesised Fe-Cr-Si-C coating, Mater. Sci. Technol. 18 (2002) 1209–1216.

DOI: https://doi.org/10.1179/026708302225005891

[6] A. Agarwal and N. B. Dahotre, Comparative wear in titanium diboride coatings on steel using high energy density processes, Wear, 240 (2000) 144–151.

DOI: https://doi.org/10.1016/s0043-1648(00)00357-4

[7] T. Teker, S. Karatas and S. Osman Yilmaz, Microstructure and wear рrореrtiеs of AISI 1020 steel surface modified bу HARDOX 450 and FеВ powder mixture, Protection of Metals and Physical Chemistry of Surfaces, 50 (2014) 94–103.

DOI: https://doi.org/10.1134/s2070205114010213

[8] E.V. Kapralov, S.V. Raikov, E.A. Budovskikh, V.E. Gromov, E.S. Vaschuk and Yu.F. Ivanov: Structural phase states and properties of coatings welded onto steel surfaces using powder, Bulletin of the Russian academy of sciences. Physics, 78 (2014).

DOI: https://doi.org/10.3103/s1062873814100098

[9] S.V. Raikov, E.V. Kapralov, Yu.F. Ivanov, E.A. Budovskikh and V.E. Gromov, Structure gradient in wear-resistant coating on steel, Steel in Translation, 45 (2015) 120–124.

DOI: https://doi.org/10.3103/s0967091215020126

[10] S.V. Raikov, E.V. Kapralov, E.S. Vaschuk, E.A. Budovskikh, V.E. Gromov, Yu.F. Ivanov, A.D. Teresov and K.V. Sosnin, Structure of the surface layer of a wear-resistant coating after treatment with a high-intensity electron beam, Journal of Surface Investigation. X-ray, Synchrotron and Neutron Techniques, 9 (2015).

DOI: https://doi.org/10.1134/s1027451015050134

[11] N.A. Popova, E. Nikonenko, Yu. F. Ivanov, V.E. Gromov, E.A. Budovskikh, S.V. Raikov, E.V. Kapralov and E.S. Vaschuk, Structure and properties of wear-resistant weld deposit formed on martensitic steel using the electric-arc method, Advanced Materials Research, 1013 (2014).

DOI: https://doi.org/10.4028/www.scientific.net/amr.1013.194

[12] E.V. Kapralov, S.V. Raikov, E.S. Vaschuk, E.A. Budovskikh and V.E. Gromov, Structural-phase states and wear resistance of surface formed on steel by surfacing, AIP Conference Proceedings, 1623 (2014) 233–236.

DOI: https://doi.org/10.1063/1.4898925

[13] V.G. Kurduymov, L.M. Utevskii and R.I. Entin, Transfomation in iron and steel, Nauka, Moscow, (1977).

[14] O.A. Bannykh, P.B. Budberg and S.P. Alisova, State diagrams of binary and multi-component systems on base of iron, Metallurgiya, Moscow, (1986).

[15] V. Biryukov, Modification of surface with the help of laser radiation, Fotonika, 3 (2010)18–21.

[16] Yu.F. Ivanov, E.V. Kornet, E.V. Kozov and V.E. Gromov, Quenched structural steel: structure and mechanisms of hardening. SibSIU, Novokuznetsk. (2010).