Strain aging and the Bauschinger effect in low-carbon pipe steel

Смирнов, М. А.; Pyshmintsev, I. Yu.; Varnak, O. V.; Maltseva, A. N.; Goikhenberg, Yu. N.

doi:10.3103/s0967091216010149

Cited by 6 publications

(4 citation statements)

References 8 publications

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“…The massive sample has a cylindrical 5-fold working part with a diameter of 6 mm, at a resonance frequency of 36 Hz, with the imposition of a constant magnetic field along the axis of the sample. Preparation and certification of the structure of the samples were carried out similarly to the samples of work [4].…”

Section: Methodsmentioning

confidence: 99%

“…The use of heat treatment with accelerated cooling from the austenitic region leads to the formation of a ferrite-bainitic (F-B) structure. This structure has higher strength properties [4]. The problem of analyzing the behavior of the noted peaks of temperaturedependent internal friction (TDI) in the case of replacing a ferrite-pearlite (F-P) structure with a ferrite-bainitic (F-B) one for the same steel is urgent.…”

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Deformation Aging in Low Carbon Steels

et al. 2021

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confidence: 99%

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Deformation Aging in Low Carbon Steels

et al. 2021

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“…A detailed analysis of various factors which affect the performance of low carbon steel grades is performed in [2,3]. Based on the results obtained, a recommendation is made to produce pipes of extremely finely dispersed microstructure with the lowest content of non-metallic inclusions [4].…”

Section: Introductionmentioning

confidence: 99%

Analyzing the Features of Non-Metallic Inclusion Distribution in Ø410 mm Continuously Cast Billets of Low Carbon Steel Grades

Chubukov

Rutskiy

Uskov

2019

MSF

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The paper reports findings on the morphology of non-metallic inclusions in low carbon pre-peritectic and peritectic steel grades used for the fabrication of seamless pipes. It is demonstrated that the distribution of non-metallic inclusions over the cross section area of continuously cast billets is of a step-like nature conditioned by the features of billet solidification. In all the steels analyzed the non-metallic inclusions are presented by oxides, sulfides and complex oxi-sulfides not larger than 2 μm.

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“…Интенсивные исследования эффекта деформационного старения сплавов на различной основе, проводимые в последние годы, можно связать с влиянием деформационного старения (ДС) на функциональные свойства и качество их поверхности [1][2][3][4][5]. Это актуально для строительных сталей нового поколения типа 08Г2Б с феррито-бейнитной (мартенситной) структурой, используемых для магистральных трубопроводов, судов, зданий и т. д.…”

Section: Introductionunclassified

Study of Luders deformation in ultrafine low-carbon steel by the digital image correlation technique

et al. 2019

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The studied steel was a low-carbon microalloyed steel of type 08G2B, used for pipes with an outer diameter of 1420 mm for natural gas transportation with an operation pressure of 11.8 MPa with the chemical composition characterized by a low-carbon content (0.08 wt.%) with additions of Mn, Cr, Mo, Ni and microalloying elements (∑(Nb, V, Ti) ≈ 0.10 wt.%). Secondary refining and continuous casting followed by thermo-mechanical controlled processing (TMCP) with a strict temperature-reduction route and control of the post-deformation cooling rate are used to produce high-strength welded X80 and higher-grade pipes with an extremely ultrafine heterophase structure (d =1-3 μm) and high Charpy energy of more than 250 J / cm 2 at -40°С. Usually sheet metal is not subjected to heat treatment. However, pipes can be heated by applying an anti-corrosion coating at 200 -250°C or by welding in a heat affected zone, which initiates the strain aging effect (SAE). The appearance of SAE can also occur upon prolonged exposure of pipes in the area of climatic temperatures, as well as in the course of installation and operation of pipelines, which inevitably leads to a change in the mechanical properties of the metal. Luders deformation in ultrafine low-carbon microalloyed steel X80 has been studied upon tensile testing by the digital image correlation technique. Two mechanisms of Luders deformation are shown to be observed depending on the strain ageing effect. It is determined that the mechanical behavior of the material at the stage of uniform deformation strongly correlates with the type of Luders deformation.

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Strain aging and the Bauschinger effect in low-carbon pipe steel

Cited by 6 publications

References 8 publications

Deformation Aging in Low Carbon Steels

Deformation Aging in Low Carbon Steels

Analyzing the Features of Non-Metallic Inclusion Distribution in Ø410 mm Continuously Cast Billets of Low Carbon Steel Grades

Study of Luders deformation in ultrafine low-carbon steel by the digital image correlation technique

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