Quantification and microstructural origin of the anisotropic nature of the sensitivity to brittle cleavage fracture propagation for hot-rolled pipeline steels

Tankoua, Franck; Crépin, Jérôme; Thibaux, Philippe; Cooreman, Steven; Gourgues-Lorenzon, Anne-Françoise

doi:10.1007/s10704-018-0297-4

Cited by 12 publications

(6 citation statements)

References 41 publications

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“…The cleavage fracture stresses of carbon steels are in a range of 2 000 to 2 500 MPa. 19,26,27) In the present study, the cleavage fracture stresses of steel A and steel B were determined to be 2 351 MPa and 2 546 MPa, respectively. In contrast, the values of the σ 3 were calculated to be 910 MPa for steel A and 721 MPa for steel B, which are lower than the cleavage fracture stress in the carbon steel.…”

Section: Formation Mechanism Of Surface Crack Defectsmentioning

confidence: 80%

Modeling of Surface Crack Defects Developed on Shear Edge in High-strength Automotive Steel Sheets

Goto¹,

Yamazaki²,

Doan³

et al. 2020

ISIJ Int.

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Section: Formation Mechanism Of Surface Crack Defectsmentioning

confidence: 80%

Modeling of Surface Crack Defects Developed on Shear Edge in High-strength Automotive Steel Sheets

Goto¹,

Yamazaki²,

Doan³

et al. 2020

ISIJ Int.

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“…The investigation of low-temperature impact fracture appearances in thermo-mechanically controlled processed steels shows that, along with ductile dimpled regions and splits, brittle tilted fracture regions could appear [21][22][23][24]. The latter phenomenon is beyond the scope of this study.…”

Section: Introductionmentioning

confidence: 83%

The Role of Splitting Phenomenon under Fracture of Low-Carbon Microalloyed X80 Pipeline Steels during Multiple Charpy Impact Tests

et al. 2022

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The ambiguity of the splitting effect on X80 low-carbon microalloyed pipeline steels’ tendency towards brittle fracture prompted an experimental study of impact toughness scattering based on multiple Charpy impact tests in a temperature range from 20 °C to −100 °C. A fractographic analysis of a large number of fractured samples was carried out. The relationships between impact toughness, deformability and splitting characteristics were studied. A number of common features of three X80 low-carbon microalloyed pipeline steel fractures were revealed. It was experimentally established that the reason for the scattering of the impact toughness values during completely ductile fracture of specimens, as well as during fracture accompanied by the splitting formation, is the local inhomogeneity of plastic properties. The higher the susceptibility to the formation of splits for a particular steel, the lower the impact toughness. Using the electron backscatter diffraction (EBSD) technique, an uneven distribution of local plasticity in the plastic zone of impact-fractured specimens was established. A comparative analysis of specimens with equal impact toughness values at different test temperatures makes it possible to identify the mechanism of negative splitting influence compensation by the increased plasticity of certain specimen.

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“…The MnS inclusion was surrounded by the clear cleavage texture which was indicated by the red‐dashed line in Figure 9. The appearance of the cleavage texture indicated that brittle fracture had occurred in this area, [ 31 ] and it was referred as the brittle fracture area in this paper. The cleavage texture extended from MnS to the surrounding area.…”

Section: Discussionmentioning

confidence: 99%

Cause Analysis of Low Tensile Plasticity in Normal Direction for Hot‐Rolled Thick Plate of HSLA Steel

Shen

Cheng

Zhang³

et al. 2023

steel research int.

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Quantification and microstructural origin of the anisotropic nature of the sensitivity to brittle cleavage fracture propagation for hot-rolled pipeline steels

Cited by 12 publications

References 41 publications

Modeling of Surface Crack Defects Developed on Shear Edge in High-strength Automotive Steel Sheets

Modeling of Surface Crack Defects Developed on Shear Edge in High-strength Automotive Steel Sheets

The Role of Splitting Phenomenon under Fracture of Low-Carbon Microalloyed X80 Pipeline Steels during Multiple Charpy Impact Tests

Cause Analysis of Low Tensile Plasticity in Normal Direction for Hot‐Rolled Thick Plate of HSLA Steel

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