Unified correlation of constraints with crack arrest toughness for high-grade pipeline steel

Zhen, Ying; Jiao, Zhijun; Cao, Yanjie; Niu, Ruiyan

doi:10.1016/j.ijpvp.2021.104454

Cited by 2 publications

(2 citation statements)

References 22 publications

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“…There are other crack origins such as pores in welding [7,8], non-metal inclusions [9,10], crystallographic orientation [11], and some external interferences [12]. Fracture toughness and crack propagation are strongly related to pipeline failure [13][14][15][16][17][18]. Devinder Mahajan and coworkers indicated that axial cracks could be common in API 5L X42 pipelines [19] when these structures underwent hydrogen embrittlement caused by unusual natural gas.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Characterization of Resistance-Welded and Seamless API 5L X52 Pipes: A Comparative Study

Terán Méndez,

Capula-Colindres,

Velázquez

et al. 2024

Coatings

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It is well known that the mechanical properties of a steel plate depend on the anisotropy of the material and the rolling directions. This paper presents the results of the Charpy V-Notch (CVN) impact test for the ST, TL, TS, LS, LT, 45°, and SL directions in API 5L X52 pipelines with electric-resistance-welded (ERW) and seamless (SMLS) pipes. Charpy specimens were manufactured and tested according to the ASTM E23 standard in laboratory conditions. All possible directions in the pipe were tested. Three Charpy specimens were tested for each direction, for a total of 21 Charpy tests. Moreover, the microstructures, hardness, ductile and brittle areas, and fracture surfaces of the Charpy specimens are presented in this research. The results show that the Charpy energy values, hardness, and microstructures depend on the direction of the specimens. The Charpy values of the SMLS pipe are higher than those of the ERW pipe because of several metallurgical factors, such as grain size, non-metallic inclusions, delaminations, and microstructures.

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Section: Introductionmentioning

confidence: 99%

Mechanical Characterization of Resistance-Welded and Seamless API 5L X52 Pipes: A Comparative Study

Terán Méndez,

Capula-Colindres,

Velázquez

et al. 2024

Coatings

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“…[1] As a kind of HSLA steel, high-grade pipeline steel has gradually become one of the development directions of pipeline steel due to its advantages of good reliability, strong adaptability, and short welding time. [2] With the increase of pipeline transportation pressure, the development of high-sulfur oil and gas wells, [3] and the harshness of the natural environment, [4] the requirements for the strength, lowtemperature toughness, and hydrogen-induced cracking (HIC) resistance of pipeline steel are continuously increasing. [5,6] Studies have shown that the mechanical properties of steel largely depend on the chemical composition, size, distribution, and morphology of inclusions.…”

Section: Introductionmentioning

confidence: 99%

Effect of Oxide Metallurgy Technology on Mechanical Properties and Hydrogen‐Induced Cracking Susceptibility of High‐Strength Low‐Alloy Steel

Jia

Yang

et al. 2023

steel research int.

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The oxide metallurgy is used in the fabrication of X80 pipeline steel. The mechanical properties of X80 steel at different tempering temperatures are studied by offline heat treatment process. The hydrogen‐induced cracking (HIC) susceptibility of X80 steel with optimal mechanical properties is studied. The results show that the optimal combinations of mechanical properties are obtained for the X80 pipeline steel under the heat treatment conditions of water quenched at 900 °C and tempered at 630 °C. The yield strength of the X80 steel is 569 MPa and the impact energy is higher than 300 J at −40 °C. After deoxidation by Ti and Zr, the average size of inclusions in X80 steel is 0.23 μm. Among them, the typical spherical composite inclusions are TiOX–Al2O3–ZrO2–MnS, combined with the fine (Nb, V, Ti)C and the formation of Cu2S and Cr2O3 protective layers. X80 steel has excellent HIC resistance.

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Unified correlation of constraints with crack arrest toughness for high-grade pipeline steel

Cited by 2 publications

References 22 publications

Mechanical Characterization of Resistance-Welded and Seamless API 5L X52 Pipes: A Comparative Study

Mechanical Characterization of Resistance-Welded and Seamless API 5L X52 Pipes: A Comparative Study

Effect of Oxide Metallurgy Technology on Mechanical Properties and Hydrogen‐Induced Cracking Susceptibility of High‐Strength Low‐Alloy Steel

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