A Mechanism for Carbon Depletion at Bondline of High-Frequency Electric-Resistance-Welded X70 Pipeline Steel

Sharma, Nitin Kumar; Kannan, Rangasayee; Li, Leijun; Anderson, Neil; Rashid, Muhammad; Collins, Laurie; Poplawsky, Jonathan D.; Unocic, Raymond R.

doi:10.1007/s11661-021-06339-w

Cited by 7 publications

(3 citation statements)

References 11 publications

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“…Furthermore, a hardness decrease was measured in the bonding line. The decrease arises due to reduced carbon content caused by oxidation and diffusion processes in the heated state of the band edges [ 45 ]. The diffusion of carbon at interfaces can also be observed in other high temperature processes [ 46 , 47 ].…”

Section: Results and Discussionmentioning

confidence: 99%

Numerical Simulation of Tube Manufacturing Consisting of Roll Forming and High-Frequency Induction Welding

et al. 2022

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This paper presents a fully coupled three-dimensional finite element model for the simulation of a tube manufacturing process consisting of roll forming and high-frequency induction welding. The multiphysics model is based on the dual mesh method. Thus, the electromagnetic field, the temperature field, the elasto-plastic deformation of the weld bead, and the phase transformations within the material can be simulated for a moving tube without remeshing. A comparison with measurements shows that the geometry of the welded tube and the weld bead, the force on the squeeze rolls, the temperature along the band edges, and the hardness distribution within the heat-affected zone can be simulated realistically.

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Section: Results and Discussionmentioning

confidence: 99%

Numerical Simulation of Tube Manufacturing Consisting of Roll Forming and High-Frequency Induction Welding

et al. 2022

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“…On the other hand, the carbon concentration in the liquid phase is higher than in the solid phase [ 28 ]. Due to the upsetting, the liquid, high-carbon phase is squeezed out of the welding zone, whereas the solid, low-carbon phase remains in the bonding line [ 22 ]. The decrease of manganese and silicon is attributed to the diffusion of the elements to the hot band edges.…”

Section: Resultsmentioning

confidence: 99%

“…This paper also proposes a mechanism for joint formation during pressure welding. The mechanism of bonding line formation and further metallographic studies to characterize the weld seam are discussed in many other publications [ 17 , 18 , 19 , 20 , 21 , 22 ]. However, the effect of different temperatures and contact normal stresses on weld seam strength and microstructure formation in HFI welding has never been considered in a scientific publication.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Temperature and Contact Pressure Influence on HFI Welded Joint Properties

et al. 2022

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This paper presents an experimental electro-thermo-mechanical simulation of high-frequency induction (HFI) welding to investigate the effect of temperature and contact normal stress on the weld seam quality. Therefore welding experiments at different temperatures and contact pressures are performed using flat specimens of 34MnB5 steel sheet. In order to characterize the weld seam strength of the welded specimens, tensile and bending tests are performed. To obtain a relative weld seam strength, the bending specimens were additionally hardened prior to testing. With the hardened specimens, it can be shown that the weld seam strength increases with increasing temperature and contact normal stress until a kind of plateau is formed where the weld seam strength remains almost constant. In addition to mechanical testing, the influence of the investigated process parameters on the weld seam microstructure is studied metallographically using light optical microscopy, scanning electron microscopy, EBSD and hardness measurements. It is shown that the weld seam strength is related to the amount of oxides in the bonding line.

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Dissolution of Nb(C,N) During Post-weld Heat-Treatment of Electric Resistance Welded X70 Line Pipe

Li,

Ravikiran,

Sharma

et al. 2024

Metall Mater Trans A

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A Mechanism for Carbon Depletion at Bondline of High-Frequency Electric-Resistance-Welded X70 Pipeline Steel

Cited by 7 publications

References 11 publications

Numerical Simulation of Tube Manufacturing Consisting of Roll Forming and High-Frequency Induction Welding

Numerical Simulation of Tube Manufacturing Consisting of Roll Forming and High-Frequency Induction Welding

Experimental Investigation of Temperature and Contact Pressure Influence on HFI Welded Joint Properties

Dissolution of Nb(C,N) During Post-weld Heat-Treatment of Electric Resistance Welded X70 Line Pipe

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