Study of microstructural evolution and strength–toughness mechanism of heavy-wall induction bend pipe

Zhou, Tao; Yu, Hao; Hu, Junli; Wang, Shaoyang

doi:10.1016/j.msea.2014.07.101

Cited by 29 publications

(21 citation statements)

References 24 publications

(25 reference statements)

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“…The internal stress values of both sides appear to increase with increasing gelatin concentration, although to a larger extent for the matte side compared with the shiny side. Increased stress values are related to the grain refinement and higher misorientation, effects possibly ascribed to the increment of grain boundaries, dislocations and micro-distortions [39]. This suggests that gelatin may not only increase the internal stresses during initial stages of deposition, but also hinder the internal stress from decreasing with plating time.…”

Section: Internal Stressmentioning

confidence: 99%

“…The smaller the effective grain size, the more large-angle interface cracks are propagating, with consequent increase in energy cost and subsequent improvement in impact toughness [39,40]. The presence of twin boundaries, a special kind of coherent boundary that can act as a strengthening phase, might be effective in blocking dislocation motions during plastic deformation and improving the mechanical properties [41,42].…”

Section: Microstructurementioning

confidence: 99%

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Synergistic effects of gelatin and convection on copper foil electrodeposition

Chang

Jin

Wen

et al. 2016

Electrochimica Acta

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Section: Internal Stressmentioning

confidence: 99%

Section: Microstructurementioning

confidence: 99%

Synergistic effects of gelatin and convection on copper foil electrodeposition

Chang

Jin

Wen

et al. 2016

Electrochimica Acta

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“…As the CEqcm of the experimental steel was 0.21, the Ac 3 temperature was 930°C, calculated by Thermocalc software according to the chemical composition and mechanical properties of X90 pipeline steel. The corresponding local induction bending parameters for X90 were worked out by referring to the local induction bending process parameters for X80 pipeline steel [15,18], such as the induction heating temperature, push speed, cooling water flow and tempering temperature, as summarized in Table 3.…”

Section: Local Induction Bending Processmentioning

confidence: 99%

“…Kathayat et al [11] indicated that more aggressive peak temperature (Above Ac3) and cooling during induction bending can prevent significant deterioration in material properties. On the other hand, many studies have been performed to evaluate the effects of hot bending parameters on microstructure and mechanical properties of thick-walled pipe bends, and the relationship of microstructure and mechanical properties under hot induction bending [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

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Microstructure and Mechanical Behavior of X90 Bend Using Local Induction Bending

Wang

Jiang

et al. 2016

Trans Indian Inst Met

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The microstructure and mechanical properties was studied for API (American Petroleum Institute) X90 pipeline steel bend, which was formed by local induction heat. It was found that X90 pipeline steel parent microstructure consisted of quasi-polygonal ferrite, granular bainite and a small amount of M/A constituents, which provided a good mechanical property. The yield strength, tensile strength, and yield ratio was 786, 876 MPa, 0.90, respectively. After local induction bending, strain-induced phase transition behavior occurred within the deformation zone. The neutral axis position was almost free from force, for quenching-tempering microstructure with small grains.

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Microstructural Characterization and Mechanical Properties across Thickness of Ultra‐Heavy Steel Plate

Zhou

Wang

2017

steel research int.

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The microstructural homogeneity across thickness and the interior toughness are significant factors challenging the development of ultra-heavy steel plate (above 200 mm) limited by the thermal transfer capacity of material and the loading capacity of mill. A complete understanding of the relationship between processing, structure, and property is essential for the optimization of alloying and heat treatment of ultra-heavy steel plate. Hence, in the present work, the authors focus on the microstructural evolution and resultant mechanical properties across the thickness of ultra-heavy steel plate under three potential heat treatment technologies, including quenching and tempering, double quenching and tempering, and intercritical quenching and tempering. The results show that the refined signal-phase lath martensite microstructure after double quenching technology can improve toughness stability, while dual-phase intercritical ferrite-martensite microstructure resulted from intercritical quenching technology achieves excellent toughness stability and ductility, and a potential optimal combination of strength and toughness for ultra-heavy steel plate. However, limited cooling capacity of the interior leads to the formation of massive coarse martensite/austenite constituents with high carbon concentration, which significantly deteriorate the toughness. Thus, the control or suppression of coarse martensite/austenite constituents is critical for optimization of lowalloyed ultra-heavy steel plate.

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Study of microstructural evolution and strength–toughness mechanism of heavy-wall induction bend pipe

Cited by 29 publications

References 24 publications

Synergistic effects of gelatin and convection on copper foil electrodeposition

Synergistic effects of gelatin and convection on copper foil electrodeposition

Microstructure and Mechanical Behavior of X90 Bend Using Local Induction Bending

Microstructural Characterization and Mechanical Properties across Thickness of Ultra‐Heavy Steel Plate

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