The effect of heat treatment on the structure and characteristics of coatings based on martensitic chromium steel obtained by surfacing with flux cored wire

Authors

  • Evgeniy Nikolaevich Еremin Omsk State Technical University, Omsk, Russia
  • Aleksandr Sergeevich Losev Omsk State Technical University, Omsk, Russia
  • Sergey Alexandrovich Borodikhin Omsk State Technical University, Omsk, Russia
  • Yury Olegovich Philippov Omsk State Technical University, Omsk, Russia
  • Ivan Andreevich Ponomarev Omsk State Technical University, Omsk, Russia
  • Arina Evgenievna Matalasova Omsk State Technical University, Omsk, Russia

Keywords:

surfacing, flux-cored wire, chromium steel, heat treatment, martensite, hardness, structure

Abstract

This study explores the effect of heat treatment regimes on the structure and characteristics of a metal deposited by a high-chromium martensitic flux-cored wire type 20Kh15. It has shown that tempering at 800 °C ensures the metal hardness to acceptable values for machining. This happens due to the structural components breakdown and the low values of the matrix and the strengthening phases microhardness. It is established that hardening with a temperature of 1020 °С is functional to increase the hardness of the metal after tempering with subsequent machining. The hardness of such a metal practically coincides with the hardness of the metal after surfacing. It has shown that this is due to the formation of a martensitic-ferritic structure strengthened by precipitates of δ-ferrite, σ-phase and chromium carbides. The proposed heat treatment modes can be used in the wear resistant surfacing technology of parts of chemical and oil-and-gas machine building.

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Author Biographies

Evgeniy Nikolaevich Еremin, Omsk State Technical University, Omsk, Russia

Doctor of Technical Sciences, Professor, Head of Mechanical Engineering and Material Science Department, Director of Machine- Building Institute.

Aleksandr Sergeevich Losev, Omsk State Technical University, Omsk, Russia

Senior Teacher of Mechanical Engineering and Material Science Department.

Sergey Alexandrovich Borodikhin, Omsk State Technical University, Omsk, Russia

Assistant of Mechanical Engineering and Material Science Department.

Yury Olegovich Philippov, Omsk State Technical University, Omsk, Russia

Candidate of Technical Sciences, Associate Professor of Mechanical Engineering and Material Science Department.

Ivan Andreevich Ponomarev, Omsk State Technical University, Omsk, Russia

Student, gr. S-131 of Machine-Building Institute.

Arina Evgenievna Matalasova, Omsk State Technical University, Omsk, Russia

Student, gr. S-131 of Machine-Building Institute.

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Abstract views: 18

Published

2017-01-12

How to Cite

Еremin Е. Н., Losev А. С., Borodikhin С. А., Philippov Ю. О., Ponomarev И. А., & Matalasova А. Е. (2017). The effect of heat treatment on the structure and characteristics of coatings based on martensitic chromium steel obtained by surfacing with flux cored wire. Omsk Scientific Bulletin. Series «Aviation-Rocket and Power Engineering», 1(2), 41–48. Retrieved from https://journals.omgtu.ru/index.php/onv_ariem/article/view/598

Issue

Vol. 1 No. 2 (2017)

Section

Materials science

License

Non-exclusive rights to the article are transferred to the journal in full accordance with the Creative Commons License BY-NC-SA 4.0 «Attribution-NonCommercial-ShareAlike 4.0 Worldwide License (CC BY-NC-SA 4.0»)

Creative Commons License

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