Effect of Bainite Crystallographic Texture on Failure of Pipe Steel Sheets Made by Controlled Thermomechanical Treatment

Pyshmintsev, I. Yu.; Struin, A. O.; Gervasyev, Alexey; Лобанов, М. Л.; Русаков, Г. М.; Данилов, С. В.; Arabey, A. B.

doi:10.1007/s11015-016-0306-7

Cited by 34 publications

(26 citation statements)

References 10 publications

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“…In some cases, the integral texture of a product plays a less important role than one of its weak components. For example, as it was demonstrated in [3][4][5], a rotated cube component with the (001) plane parallel to the rolling plane plays a significant role in the fracture of steel plates for welded pipes. The existence of coarse elongated grains with this orientation is critical for easy crack nucleation and propagation in such areas.…”

Section: Introductionmentioning

confidence: 93%

Features of shear transformation texture in seamless pipes

Лобанов¹,

Pyshmintsev²,

Maltseva³

et al. 2018

AIP Conference Proceedings

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Microstructure and texture in seamless 0.08C-Cr-Mo-V, 0.25C-Cr-Mo-V-Nb, 0.08-13Cr-3Ni-Mo-V-Nb, and 18Cr-9Ni steel pipes are studied in the as-rolled and heat-treated states using orientation EBSD microscopy. It has been found that all types of microstructure (ferrite, martensite, and bainite) in products, both after hot rolling and after heat treatment, have well-defined axial crystallographic texture, where the <111> direction is predominately perpendicular to the pipe surface. It is demonstrated that texture formation in heat-treated states is inherited due to the following factors important for the rules of orientation selection during the γ→α phase transformation: 1) occurrence of stable orientation of austenite grains resulted from straining; 2) special misorientation (boundaries) of austenite grains where transformation starts; 3) orientation relationships known for phase transformation; 4) thermal stresses in a product, formed during cooling. The latter can be considered as factor determining special texture in seamless steel pipes. Mechanics, Resource and Diagnostics of Materials and Structures (MRDMS-2018)AIP Conf.

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Section: Introductionmentioning

confidence: 93%

Features of shear transformation texture in seamless pipes

Лобанов¹,

Pyshmintsev²,

Maltseva³

et al. 2018

AIP Conference Proceedings

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“…The steel has relatively low tensile strength which is paired with high ductility and fracture toughness according to in-filed pneumatic test results. Besides, it shows high resistance to structural and mechanical degradation during long-term operation [18,19]. Tensile stress-strain curves of this steel do not always exhibit a yield plateau.…”

Section: Introductionmentioning

confidence: 97%

Effect of Structural Heterogeneity of 17Mn1Si Steel on the Temperature Dependence of Impact Deformation and Fracture

Моисеенко

Maruschak

Panin

et al. 2017

Metals

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Abstract:The paper deals with a theoretical and experimental study of the relationship between the microstructural parameters, mechanical properties, and impact deformation and fracture of steels using the example of 17Mn1Si pipe steel. A model for the behavior of a polycrystalline grain conglomerate under impact loading at different temperatures was proposed within a cellular automata framework. It was shown that the intensity of dissipation processes explicitly depends on temperature and these processes play an important role in stress relaxation at the boundaries of structural elements. The Experimental study reveals the relationship between pendulum impact test temperature and the deformation/fracture energy of the steel. The impact toughness was shown to decrease almost linearly with the decreasing test temperature, which agrees with the fractographic analysis data confirming the increase in the fraction of brittle fracture in this case. It was shown with the aid of the proposed model and numerical simulations that the use of the excitable cellular automata method and an explicit account of test temperature through the possibility of energy release at internal interfaces help to explain the experimentally observed features of impact failure at different temperatures.

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“…The state of plates for the production of pipelines plays a crucial role in pipeline resistance to so-called ductile running fracture. Enhancement of steel strength characteristics (for grades X70, X80 and higher) has had a considerably negative effect on the ability of semi-finished and finished pipeline products to arrest running ductile fracture [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Tensile Deformation and Fracture Behavior of API-5L X70 Line Pipe Steel

Лобанов

Хотинов

Urtsev³

et al. 2022

Materials

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Thermo-mechanical controlled processing (TMCP) is employed to obtain the required level of mechanical properties of contemporary HSLA steel plates utilized for gas and oil pipeline production. The strength and crack resistance of pipeline steels are mainly determined by its microstructure and crystallographic texture. In this study, the influence of the structural and textural states of industrially produced API-5L X70-X80 pipeline steels on tensile mechanical properties was analyzed. TMCP routes with different hot rolling temperatures and cooling rates were employed. The texture of steel was assessed using the Taylor factor, which was calculated based on electron backscatter diffraction (EBSD). The decrease in rolling temperature resulted in the sharper texture characterized by {001} planes banding (cleavage planes in the bcc lattice) parallel to rolling direction. The tensile deformation behavior at the stage of necking was determined by the crystallographic and morphological texture of the material and demonstrated significant anisotropy. Rupture of all investigated samples was accompanied by the development of splitting on the fracture surface. The splitting was localized in the rolling plane similar to the splitting in standard Charpy tests of pipeline steels.

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Effect of Bainite Crystallographic Texture on Failure of Pipe Steel Sheets Made by Controlled Thermomechanical Treatment

Cited by 34 publications

References 10 publications

Features of shear transformation texture in seamless pipes

Features of shear transformation texture in seamless pipes

Effect of Structural Heterogeneity of 17Mn1Si Steel on the Temperature Dependence of Impact Deformation and Fracture

Tensile Deformation and Fracture Behavior of API-5L X70 Line Pipe Steel

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