The influence of nanoparticles of modifiers on the kinetics of transformation of high-strength low-alloy steels in metal welds

Authors

  • G. M. Grigorenko E. O. Paton Electric Welding Institute of the NAS of Ukraine, Kiev
  • V. A. Kostin E. O. Paton Electric Welding Institute of the NAS of Ukraine, Kiev
  • V. V. Golovko E. O. Paton Electric Welding Institute of the NAS of Ukraine, Kiev
  • V. V. Zhukov E. O. Paton Electric Welding Institute of the NAS of Ukraine, Kiev

DOI:

https://doi.org/10.15407/dopovidi2016.07.070

Keywords:

arc welding, austenite decomposition chart, microstructure, nanopowder inoculators, weld metal ingot

Abstract

The structure of welds of 14KhGNDTs high-strength low-alloy steel is studied. In the melt of this steel, nanopowder particles of various refractory compounds such as oxides, nitrides, and carbides (TiC, TiN, SiC, VC, NbC, TiO2, Al2O3, MgO, ZrO2) were introduced. The studies have shown the efficiency of the use of nanooxides TiO2 and ZrO2, which allows us to improve the mechanical properties of the metal of welds (σv = 708 and 621 MPa, respectively, KCV−20 = 60 and 72.9 J/cm2, δ = 21 and 19%) due to the formation of a complex of bainite and acicular structures. With the aid of a Gleeble 3800 installation imitating the thermal cycles, the relationship between the temperature intervals of the transformation, number of structural components, and type of modifying nanoparticles is established.

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References

Saburov V. P., Cherepanov A. N. Plasma chemical synthesis of ultrafine powders and their application for the modification of metals and alloys, Moscow: Nauka, 1995 (in Russian)

Kostin V. A., Golovko V. V., Grigorenko G. M. Zb´ırnik naukovykh prats’ NUK, 2011, No 4 (433): http://www.jnn.nuos.edu.ua/article/viewFile/255891/23055 (in Russian).

Saburov V. P., Eremin E. N., Cherepanov A. N., Minnehanov G. N. Modification of steels and alloys dispersed inoculators, Omsk: OmSTU Publ. House, 2002 (in Russian).

Pokhodnya I. K., Alter V. F., Shumikhin V. S., Razdobarin I. G. Protsessy lit’ya, 1993, No 1: 3–8 (in Russian).

Grigorenko G. M., Kostin V. A., Golovko V. V., Zhukov V. V., Zuber T. A. Sovremennaya elektrometallurgiya, 2015, No 2: 32–41 (in Russian).

Grigorenko G. M., Kostin V. A., Orlovskiy V.Yu. Avtomaticheskaya svarka, 2008, No 3: 31–34 (in Russian).

Cherepin V. T. The experimental technique in physical metallurgy, Kyiv: Tehnika, 1968 (in Russian).

Zadiranov A. N., Katz A. M. Theoretical Foundations of crystallization of metals and alloys, Moscow: MGIU, 2008 (in Russian).

Kalinin V. T., Hrychikov V. E., Krivosheev V. A. Teoriya i praktika metallurgii, 2004, No 2: 25–29 (in Russian).

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Published

15.11.2024

How to Cite

Grigorenko, G. M., Kostin, V. A., Golovko, V. V., & Zhukov, V. V. (2024). The influence of nanoparticles of modifiers on the kinetics of transformation of high-strength low-alloy steels in metal welds . Reports of the National Academy of Sciences of Ukraine, (7), 70–77. https://doi.org/10.15407/dopovidi2016.07.070

Issue

No. 7 (2016): Reports of the National Academy of Sciences of Ukraine

Section

Materials Science

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