The mechanical properties of thick rolled plate for main pipelines with a ferrite-bainite microstructure in different directions over the plate plane are determined, mechanical property anisotropy is revealed, and its features are studied. It is established that the structure of bainite, consisting of ferrite platelets with fine carbide interlayers along boundaries, orientated in a specific way in the plate plane with respect to the rolling direction, provokes propagation of a brittle crack and reduces metal cold resistance considerably in directions close to the preferred orientation of microstructural components.
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R. Rittmann and K. Freier, “Niobium containing steels for spiral and electric resistance welded line pipe production,” in: Niobium Science & Technology (Florida, USA, December 2–5, 2001), The Minerals, Metals & Materials Society (TMS) (2002), pp. 571–586.
D. Stalheim, K. Barnes, and D. McCutcheon, “Alloy designs for high strength oil and gas transmission linepipe steels,” in: Int. Symp. on Microalloyed Steels for the Oil and Gas Industry (Araxa, MG, Brazil, January 23–26, 2006), The Minerals, Metals & Materials Society (TMS) (2007), pp. 73–108.
K.-B. Kang, J. H. Bae, and W.-Y. Choo, “Effect of thermomechanical processing parameters on mechanical properties and microstructure of API–X80 grade hot rolled strips,” in: 4th Int. Conf. on Pipeline Technology (Ostend, Belgium, May 9–13, 2004), Vol. 4, pp. 1689–1699.
O. L. Garsia, R. Petrov, J. H. Bae, et. al., “Microstructure – texture related toughness anisotropy of API–X80 pipeline steel,” Adv. Mater. Research. Trans. Tech. Publications, Switzerland, 15–17, 840–845 (2007).
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Translated from Metallurg, No. 12, pp. 33–39, December, 2010.
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Kichkina, A.A., Matrosov, M.Y., Efron, L.I. et al. Effect of structural anisotropy of ferrite-bainite pipe steel on mechanical properties in tensile and impact bending tests. Metallurgist 54, 808–816 (2011). https://doi.org/10.1007/s11015-011-9379-5
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DOI: https://doi.org/10.1007/s11015-011-9379-5