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V. M. Farber, O. N. Polukhina, O. V. Selivanova, A. N. Morozova, D. I. Vichuzhanin, O. R. Tagirova

PRE-YIELD AND LOCALIZED DEFORMATION BAND NUCLEATION IN A STRAIN-AGING LOW-CARBON STEEL

DOI: 10.17804/2410-9908.2024.1.045-051

The features of plastic flow during tensile deformation of 08G2B steel samples exhibiting the effect of strain aging are studied by means of the digital image correlation method. Standard flat samples cut out from a sheet made by controlled rolling are tested for tensile strength after heat treatment according to the following conditions: 680 °C, holding time of 30 min, air cooling. It is shown that, at the stage of macroelastic deformation, there occur both diffuse plastic flow in separate parts of the sample under tension and the emergence of a nucleus center in the near-surface region, wherefrom a localized deformation band nucleus subsequently grows.

Acknowledgments: The work was carried out in UrFU with a financial support from the Ministry of Science and Higher Education of Russia (development program within the framework of the Priority 2030 pro-gram), in the IMP UB RAS as part of the state assignment from the Russian Ministry of Science and Higher Education (theme Structure, No. 122021000033-2), and as part of the state assignment for the IES UB RAS, No. 124020700063-3. The equipment of the Plastometriya shared research facilities (IES UB RAS) was used in the tests.

Keywords: low-carbon steels, strain aging, localized deformation band, digital image correlation method

References:

  1. Farber, V.M., Polukhina, O.N., Khotinov, V.A., Vichuzhanin, D.I., and Smirnov, S.V. A study of plastic deformation of 08G2B steel before and at the yield plateau by digital image correlation technique. Part 1. Formation of plastic and elastic deformation waves. Metal Science and Heat Treatment, 2019, 61 (5–6), 274–279. DOI: 10.1007/s11041-019-00416-z.
  2. Farber, V.M., Selivanova, O.V., Khotinov, V.A., and Polukhina, O.N. Deformatsionnoe starenie v stalyakh [Strain Aging in Steels]. Izd-vo Uralskogo Universiteta Publ., Ekaterinburg, 2018, 72 p. (In Russian).
  3. Shtremel, M.A. Prochnost splavov. Deformatsiya [Strength of Alloys. Deformation: Part 2]. MISiS Publ., Moscow, 1997, 527 p. (In Russian).


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Article reference

Pre-Yield and Localized Deformation Band Nucleation in a Strain-Aging Low-Carbon Steel / V. M. Farber, O. N. Polukhina, O. V. Selivanova, A. N. Morozova, D. I. Vichuzhanin, O. R. Tagirova // Diagnostics, Resource and Mechanics of materials and structures. - 2024. - Iss. 1. - P. 45-51. -
DOI: 10.17804/2410-9908.2024.1.045-051. -
URL: http://eng.dream-journal.org/issues/2024-1/2024-1_428.html
(accessed: 06/22/2024).

 

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Founder:  Institute of Engineering Science, Russian Academy of Sciences (Ural Branch)
Chief Editor:  S.V. Smirnov
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