A review on the advance of low-temperature toughness in pipeline steels

Bai, Peng; Shang, Chunlei; Wu, Hong‐Hui; Ma, Guoqiang; Wang, Shuize; Wu, Guilin; Gao, Junheng; Chen, Yimian; Zhang, J. Y.; Zhu, Jiaming; Mao, Xinping

doi:10.1016/j.jmrt.2023.07.119

Cited by 8 publications

(5 citation statements)

References 116 publications

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“…al. showed that compared to Ti-Mo steel, Nb-Mo steel exhibited a finer microstruct better low-temperature toughness [10]. Wu examined the relationship between th elements and the strength and impact toughness of X80 pipeline steel, and the showed that with an increase in Nb content, both the strength and impact tou increased [11].…”

Section: Methodsmentioning

confidence: 99%

“…The microstructure of conventional X80 pipeline steel has a low-carbon bainite structure, including polygonal ferrite (PF), granular bainite (GB), bainitic ferrite with lath features (LB), and martensite-austenite (M/A) constituents [6][7][8][9], while the main elements affecting the transformation behavior and microstructure of high-strength pipeline steel are Mo, Nb, B, Ni, etc. [10,11].…”

Section: Introductionmentioning

confidence: 99%

“…Sun Metals 2024, 14, 42 2 of 13 et al showed that Nb dissolved in austenite enhanced the strength of tempered forged steel due to its excellent solid solution strengthening effect [9]. Bai et al showed that compared to Ti-Mo steel, Nb-Mo steel exhibited a finer microstructure and better low-temperature toughness [10]. Wu examined the relationship between the alloy elements and the strength and impact toughness of X80 pipeline steel, and the results showed that with an increase in Nb content, both the strength and impact toughness increased [11].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Nb Content on the Microstructure and Impact Toughness of High-Strength Pipeline Steel

Jiang,

Zhang,

Guo

et al. 2023

Metals

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In this study, X80 pipeline steel is prepared with different Nb contents through the thermo-mechanically controlled rolling process. The effects of using two different Nb contents on the impact toughness and microstructure of the pipeline steel are examined using various experimental techniques. The results show that with the increase in Nb content, the transformation temperature Ar3 decreases, and the nucleation and growth of bainitic ferrite with lath features (LB) are promoted, while those of granular bainite (GB) are inhibited. In addition, the stability of the austenite phase increases with the increase in Nb content. Therefore, the volume fractions of LB and martensite–austenite (M/A) constituents increase, while the proportion of high-angle grain boundaries (HAGBs) decreases. The impact energy of pipeline steel at −45 °C is closely related to the Nb content. Specifically, the impact energy decreases from 217 J at 0.05 wt.% Nb to 88 J at 0.08 wt.% Nb. The cracks are preferentially formed near the M/A constituents, and the HAGBs significantly inhibit the crack propagation. The steel with 0.05 wt.% Nb has a lower content of M/A constituents and a higher proportion of HAGBs than the one with 0.08 wt.% Nb. In addition, as the Nb content increases, the crack initiation energy and the crack propagation energy decrease. Thus, the 0.05 wt.% Nb steel has a higher low-temperature impact energy.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Nb Content on the Microstructure and Impact Toughness of High-Strength Pipeline Steel

Jiang,

Zhang,

Guo

et al. 2023

Metals

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“…Sportsmen use helmets and body gear. Durable materials endure oil and gas pressure [43]. Strong maritime and offshore constructions can resist waves and smash [44].…”

Section: Charpy Impact Test (Cit-toughness) Of Aisi 316/ Er316lmentioning

confidence: 99%

Experimental investigation of the impact of GMAW welding parameters on the mechanical properties of AISI 316L/ER 316L using quaternary shielding gas

Khrais,

Al Hmoud,

Abdel Al

et al. 2024

Mater. Res. Express

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In this study, the parameters of Metal Inert Gas (MIG) and Metal Active Gas (MAG) were investigated of AISI 316L/ER 316L. A quaternary shielding gas mixture consisting of Argon (Ar), Helium (He), Carbon Dioxide (CO2), and Nitrogen (N2) was chosen. The Taguchi orthogonal array (OA-L9) methodology was employed to explore optimal welding settings, including arc current (120A, 160A, 200A), wire feed rate (3, 3.5, 4 m/min), and shielding gas combination (G1, G2, G3). The findings highlighted the importance of shielding gas in influencing the ultimate tensile strength (UTS), elongation percentage (EL.%), and material toughness of welding joints. Notably, the highest UTS (515.77 MPa), EL.% (20.85%), and material toughness (133J) were achieved by the specific group gas combination shown as G1. It is recommended to configure welding parameters to an arc current of 160A, a wire feed rate of 4 m/min, and the G1 gas combination. Welded specimens using a G1 gas mixture showcased the best UTS and EL.%. Additionally, it was found that the fusion zone (FZ) and heat-affected zone (HAZ) hardness are most profoundly influenced by the choice of gas combination (G2), resulting in the best hardness values of 253.79 HV and 239.68 HV, respectively. The optimal parameters for achieving the desired material hardness were precisely identified as (120A, 3 m/min, G2). These insights offer a pathway to enhance welding performance and, in turn, elevate the quality and efficiency of industrial applications.

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“…Additionally, the casting inclusion, like bifilms and oxide inclusions, may also affect the toughness [7]. The other factor is the microstructural heterogeneity, which is usually induced by an uneven rolling deformation and cooling rate [8][9][10]. Microstructural heterogeneity usually exists across the thickness direction of heavy plates or along the axis of the steel pipe [11,12].…”

Section: Introductionmentioning

confidence: 99%

Unraveling the Mechanism of Toughness Fluctuation in Ultra-High-Strength Casing from the Perspective of Crystallography

Gao,

Dong,

et al. 2024

Metals

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The microstructure and impact toughness in an ultra-high-strength casing were investigated, attempting to reveal the reason for toughness fluctuations along the casing in terms of crystallography. The morphological structures at the head of the casing are lath bainite, while those at the end are granular bainite and lath bainite. The head exhibits a higher density of high-angle grain boundaries dominated by block boundaries and a higher impact toughness than the end, showing an inhomogeneous microstructure and causing toughness fluctuations in the casing. The higher density of block boundaries in the head resulted from weaker variant selection because of its higher cooling rate than the end. Therefore, the underlying reason for the toughness fluctuations lies in the varying densities of the block boundaries along the casing triggered by uneven cooling.

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A review on the advance of low-temperature toughness in pipeline steels

Cited by 8 publications

References 116 publications

Effect of Nb Content on the Microstructure and Impact Toughness of High-Strength Pipeline Steel

Effect of Nb Content on the Microstructure and Impact Toughness of High-Strength Pipeline Steel

Experimental investigation of the impact of GMAW welding parameters on the mechanical properties of AISI 316L/ER 316L using quaternary shielding gas

Unraveling the Mechanism of Toughness Fluctuation in Ultra-High-Strength Casing from the Perspective of Crystallography

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