Issues »  Volume 10, Issue 4

Structure-Phase Transformations in the Quenched Constructional Steel at Deformation

Yu. F. Ivanov$^{1}$, E. V. Cornet$^{2}$, V. E. Gromov$^{2}$, S. V. Konovalov$^{2}$

$^1$Institute of High Current Electronics SB RAS, 2/3 Akademicheskiy Ave., 634055 Tomsk, Russia
$^2$Siberian State Industrial University, 42 Kirov Str., 654007 Novokuznetsk, Russia

Received: 19.05.2009. Download: PDF

The process of plastic deformation of quenched constructional 38CrNi3MoV (0.38% C, < 1% Cr, 3% Ni, < 1% Mo, < 1% V) steel is studied by methods of transmission electron diffraction microscopy and X-ray structure analysis. The stages of deformation curves are revealed during the steel compression. Deformation localization places, namely, deformation channels having the transverse size of 0.5 $\mu$m and longitudinal ones of some microns, are revealed and analysed. In deformation channels, there are fragments with sizes of 50-100 nm. Longitudinal fragment sizes of martensite crystals are decreased, and microtwins’ density, scalar and excess dislocation density, amplitude of long-range stress fields are increased with the deformation-degree growth. The possible places of carbon-atoms localization in the steel structure are determined. As shown, the total quantity of carbon atoms located in the solid solutions based on $\alpha$- or $\gamma$-Fe is increased, and it is decreased on the structure defects with the growth of deformation degree.

Keywords: hardened steel, deformation, carbon localization.

PACS: 61.72.-y, 62.20.F-, 64.70.kd, 81.40.Jj, 81.40.Lm, 81.70.Bt, 83.50.-v

DOI: https://doi.org/10.15407/ufm.10.04.389

Citation: Yu. F. Ivanov, E. V. Cornet, V. E. Gromov, and S. V. Konovalov, Structure-Phase Transformations in the Quenched Constructional Steel at Deformation, Usp. Fiz. Met., 10, No. 4: 389—414 (2009) (in Russian), doi: 10.15407/ufm.10.04.389

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