Distribution of Stress in Deformation Zone of Niobium Microalloyed Steel
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Microalloyed steels today represent a significant part of total world production and processing of steel. Although widely used, there are scarce data on the stress distribution in the deformation zone of these steels. Research was carried out on two steel grades, both low-carbon structural steels with the same basic chemical composition, with one of them additionally microalloyed with niobium. Differences in the stress distribution in the deformation zone between two tested steels were continuously observed and measured using the methods of digital image correlation and thermography. It has been found out that niobium microalloyed steel has significantly more complex material flow and stress distribution in the deformation zone when compared to the plain low carbon steel.
KeywordsMicroalloyed steel Plastic deformation Thermography Stress Deformation zone
This work has been fully supported by the Croatian Science Foundation under the Project Number IP-2016-06-1270.
- 3.F.B. Pickering, The spectrum of microalloyed high strength low, alloyed steels, in HSLA Steel Technology and Applications, International Conference on Technology and Applications of HSLA Steels (Philadelphia, Pennsylvania, 1983), p. 34Google Scholar
- 4.S. Rešković, Studij mehanizama precipitacije i rekristalizacije u području završnog oblikovanja mikrolegiranog čelika (Doctoral Dissertation, University of Zagreb Faculty of Metallurgy, Sisak, 1997)Google Scholar
- 5.W.B. Morrison, Overview of microalloying in steel, in The Proceedings of the Vanitec Symposium, Guilin, China 2000, The Vanadium International Technical Committee (Vanitec Limited, Westerham Kent, England, 2000), pp. 25–35Google Scholar
- 7.T. Tanaka, N. Tabata, T. Hatamura, There stages of the controlled-rolling process, in Micro Alloying 75 (Union Carbide Corporation, New York, 1977), p. 75Google Scholar
- 9.W. Su-Fen, P. Yan, L. Zhi-Jie, Work-hardening and deformation mechanism of cold rolled low carbon steel. Res. J. Appl. Sci. Eng. Technol. 5(3), 823–828 (2013)Google Scholar
- 10.M.M. Kutin, S.S. Ristić, M.R. Prvulović, M.M. Prokolab, N.M. Marković, M.R. Radosavljević, Application of thermography during tensile testing of butt welded joints. FME Trans. 39, 133–138 (2011)Google Scholar
- 13.S. Rešković, I. Jandrlić, Influence of niobium on the beginning of the plastic flow of material during cold deformation. Sci. World J. 2013, 723725 (2013)Google Scholar
- 15.M. De Strycker, P. Lava, W. Van Paepegem, L. Schueremans, D. Debruyne, Measuring welding deformations with the digital image correlation technique. Weld. J. 90(6), 107–112 (2011)Google Scholar