Relationships among crystallographic texture, fracture behavior and Charpy impact toughness in API X100 pipeline steel

Yang, Xiaolong; Xu, Yujie; Tan, Xiang-Yang; Wu, Di

doi:10.1016/j.msea.2015.06.029

Cited by 74 publications

(28 citation statements)

References 37 publications

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“…Upgrading of pipeline steels from X52 to X80 and even higher grades has been achieved, aiming at the increment of transportation capacity and reduction of cost [1]. With yield strength ranging from 555 MPa to 705 MPa, X80 has been already employed in numerous fields with high pressure, large diameter, long distance transmission pipelines [2].…”

Section: Introductionmentioning

confidence: 99%

Innovative analysis of Luders band behaviour in X80 pipeline steel

Han

Lü

et al. 2017

Materials Science and Engineering: A

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In this study, the influence of Luders bands, which are frequently observed after the pipe coating process, is investigated. Stratified tensile test specimens, machined from different locations across the thickness of an X80 line pipe, were tested. The Luders bands were observed by using a digital image correlation (DIC) in the specimen machined from halfway across the pipe wall thickness. The specimens from the selected locations related to the Luders bands were studied and compared by means of optical microscopy (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD), electron backscatter diffraction (EBSD) and standard mechanical testing. The results display that the microstructure, lattice constant, dislocation density and Schmid factors change when the Luders bands pass through the tensile test specimen, which brings about the difference in mechanical properties. The study of the influence of Luders bands on microstructures and mechanical properties enables better understanding of the strain-ageing mechanism. ABSTRACTIn this study, the influence of Luders bands, which are frequently observed after the pipe coating process, is investigated. Stratified tensile test specimens, machined from different locations across the thickness of an X80 line pipe, were tested. The Luders bands were observed by using a digital image correlation (DIC) in the specimen machined from halfway across the pipe wall thickness. The specimens from the selected locations related to the Luders bands were studied and compared by means of optical microscopy (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD), electron backscatter diffraction (EBSD) and standard mechanical testing. The results display that the microstructure, lattice constant, dislocation density and Schmid factors change when the Luders bands pass through the tensile test specimen, which brings about the difference in mechanical properties. The study of the influence of Luders bands on microstructures and mechanical properties enables better understanding of the strain-ageing mechanism.

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Section: Introductionmentioning

confidence: 99%

Innovative analysis of Luders band behaviour in X80 pipeline steel

Han

Lü

et al. 2017

Materials Science and Engineering: A

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“…Yang et al [8][9] argued that due to the large volume fraction of {001} planes parallel to the rolling plane, delamination would decrease Charpy impact toughness in API X100 pipeline steel. Mirzaev et al [10] determined that delamination cracks in the ferritic 08Kh18T1 steel were formed in the rolling process under HTMT (High Temperature Thermomechanical Treatment ) as a result of {100} and A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT 3 {111} planes being predominantly located in the rolling plane.…”

Section: Introductionmentioning

confidence: 99%

A study of the mechanism of delamination fracture in bainitic magnetic yoke steel

Tao

Yan

et al. 2016

Materials & Design

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“…Blonde et al 9 showed that the grains associated with {100} planes are the most strained by the applied stress in comparison to the strain development for other grain orientations. Nafisi et al 10 and Yang et al 11 also studied the effect of texture evolution on the mechanical properties of API X100 steel. They concluded that the (001)<110> rotated cube components provide cleavage planes that facilitate crack nucleation and propagation.…”

Section: Introductionmentioning

confidence: 99%

Effect of Rolling in the Recrystallization Temperature Region Associated with a Post-Heat Treatment on the Microstructure, Crystal Orientation, and Mechanical Properties of API 5L X70 Pipeline Steel

2016

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In order to improve the mechanical properties of API X70 pipeline steel, a rolling schedule in the recrystallization temperature region associated with a post heat treatment was proposed. Optical and scanning electron microscopy, electron backscattered diffraction, hardness, and tensile tests were carried out to show the effects of microstructure and crystallographic orientation on the final mechanical properties. The normalized hot-rolled sample and the sample subjected to hot-rolling followed by quenching and consequent tempering at 700 °C exhibited an excellent combination of yield strength and elongation. This was attributed to the recrystallized ferrite microstructure and tempered martensite with martensite-austenite constituent dispersion, respectively. In addition, the development of (112) [1̅ 1̅ 1] and (111)[101̅ ] texture components and the high fraction of low angle boundaries have a significant effect on the improvement of the mechanical properties.

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Relationships among crystallographic texture, fracture behavior and Charpy impact toughness in API X100 pipeline steel

Cited by 74 publications

References 37 publications

Innovative analysis of Luders band behaviour in X80 pipeline steel

Innovative analysis of Luders band behaviour in X80 pipeline steel

A study of the mechanism of delamination fracture in bainitic magnetic yoke steel

Effect of Rolling in the Recrystallization Temperature Region Associated with a Post-Heat Treatment on the Microstructure, Crystal Orientation, and Mechanical Properties of API 5L X70 Pipeline Steel

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