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Structural Features of Welded Joint of Medium-Carbon Chromium Steel Containing Metastable Austenite

Authors
  • Korobov, Yu. S.1, 2
  • Pimenova, O. V.1
  • Filippov, M. A.1
  • Khadyev, M. S.1
  • Ozerets, N. N.1
  • Mikhailov, S. B.1
  • Morozov, S. O.1
  • Davydov, Yu. S.1
  • Razikov, N. M.1
  • 1 Ural Federal University, Yekaterinburg, 620002, Russia , Yekaterinburg (Russia)
  • 2 Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, Yekaterinburg, 620108, Russia , Yekaterinburg (Russia)
Type
Published Article
Journal
Inorganic Materials: Applied Research
Publisher
Pleiades Publishing
Publication Date
Jan 01, 2020
Volume
11
Issue
1
Pages
132–139
Identifiers
DOI: 10.1134/S2075113320010220
Source
Springer Nature
Keywords
License
Yellow

Abstract

AbstractPhase transitions during crystallization and subsequent thermal and deformation effects under the influence of various mechanical loads in welded joints of the plates of medium carbon steel by a consumable electrode in shielding gases with a flux-cored wire based on Fe–C–Cr matrix are studied. The test results for weldability, abrasive wear resistance, and stress state formation and the results of metallographic, electron microscopic, and X-ray diffraction studies are analyzed. It is shown that the structure of welded seam consists of metastable austenite, δ-ferrite, and high-strength carbon–chromium martensite. Welded joints have a high capability of intense hardening under local deformation owing to the TRIP effect (transformation-induced plasticity).

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