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COMPOSITION EFFECTS AND THERMOMECHANICAL TREATMENTS ON MECHANICAL AND STRUCTURAL PERFORMANCE OF S420NL STEEL
Abstract
Due to the increased consumption of S420NL thick steel plates, the world steel price is expected to decrease. The main purpose of this investigation is to find an optimal solution both from a technical and commercial point of view to produce heavy plate 40 mm thick microalloyed S420NL hypoeutectoid steel. The imposed resistance class for this alloy is 420MPa with proven tenacity properties at temperatures up to-50 В°C. The experiment encompasses the necessity of defining a metallurgical route including chemical composition. Furthermore, the thermomechanical rolling parameters and final thermal treatment parameters were defined to provide the strength, deformability and tenacity properties required by the standard of the product. The Baumann's level of Mannesmann segregation, the purity and morphology were evaluated in cast state before deformation. The structural investigations were performed using optical microscopy and scanning electron microscope (SEM). The EDX were done on different ferrite and pearlite grains.The mechanical properties were determined by tensile test and Charpy V-Notch test.
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I. F. Pemov, Y. D. Morozov, A. A. Naumenko, and D. V. Nizhelsky, “Development of economically alloyed structural steel of strength classes 345 and 390,” Metallurgist, vol. 56, no. 5, pp. 1–8, 2012.
V. M. Goritskii, G. R. Shneyderov, and M. A. Lushkin, “Nature of anisotropy of impact toughness of structural steels with ferrite-pearlite structure,” Phys. Met. Metallogr., vol. 114, no. 10, pp. 877–883, 2013.
Radu T., Constantinescu S., Balint S., Balint L., “The proeutectoid transformations in steels“, Proceedings of 12 th International Metallurgy and Materials Congress, ISBN 976-973-7845-94-8, 2005
Tamara Radu, “Transformări în stare solidă în metale și aliaje“, Editura Științifică F. M. R. ISBN:973-8151-34-4”, 2003 .
D. D. A. Bhattacharya, A. Bagdi, “Influence of microstructure on high stress abrsive wear behaviour of a microalloyed steel,” Perspect. Sci., vol. 8, pp. 614–617, 2016.
Y. Hu, C. Baniotopoulos, and J. Yang, “Effect of internal stiffening rings and wall thickness on the structural response of steel wind turbine towers,” Eng. Struct., vol. 81, pp. 148–161, Dec. 2014.
J. Carpio, J. A. Casado, J. A. Álvarez, and F. Gutiérrez-Solana, “A micromechanical model of the cracking failure on structural steel components during hot-dip galvanizing,” Surf. Coatings Technol., vol. 286, pp. 335–346, 2016.
P. E. J. R.-D.-C. and C. G.-A. D. San Martı´n, a, b and B, “In situ study of austenite formation by dilatometry in a low carbon microalloyed steelfull-text,” Scr. Mater. 58, vol. 58, pp. 926–929, 2008.
F. Potecasu, M. Marin, O. Potecasu, F.B. Marin, M. Neacsu, “Improved corrosion resistance and mechanical properties in sintered iron-based p/m materials by applying a thermochemical treatment“,International Multidisciplinary Scientific GeoConference-SGEM, pp 159-166, 2016
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