Effect of niobium addition on the flux of submerged arc welding of low carbon steels

Osório, Alice Gonçalves; Souza, Daniel; Passos, Thais Andrezza dos; Dalpiaz, L.; Aires, Thayse do Amaral

doi:10.1016/j.jmatprotec.2018.10.020

Cited by 25 publications

(13 citation statements)

References 14 publications

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“…Moreover, it is possible to increase the AF Vol% by increasing WM's prior austenite grain size and oxygen content. The oxygen concentration of steel BMs is almost always less than that of the WM's; therefore, oxygen can be a positive boon or a negative bane; it helps to have a higher number density of complicated inclusions while reducing prior austenite grain size and inclusions size [32][33][34]. Fig.…”

Section: Methodsmentioning

confidence: 99%

Microstructural and mechanical evaluations of SAW by manufactured granular basic bonded Cr, Mo, and Cr–Mo active fluxes on ST37 low carbon steel

Alishavandi

Mohammadmirzaei

Ebadi

et al. 2022

Int J Adv Manuf Technol

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Bead-on-plate submerged arc welding was conducted on St37 steel by manufactured Cr, Mo, and Cr-Mo active basic uxes produced via the unfused bonded method. The base metal heat-affected zone and weld metal (WM) microstructures were identi ed and characterized by optical microscopy and scanning electron microscopy. Then, the ferrite morphologies volume fraction of WMs were measured. Moreover, the chemical analysis of slag and inclusions was evaluated by point scan energydispersive X-ray spectroscopy and extensively discussed. Inclusions number density and size and their effects on the formation of AF were also elaborated. Then, the WMs' longitudinal tensile strength and Vickers hardness were measured.Finally, the Charpy V-notch test was conducted to determine the impact toughness; the fracture surfaces were investigated, as well.

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Section: Methodsmentioning

confidence: 99%

Microstructural and mechanical evaluations of SAW by manufactured granular basic bonded Cr, Mo, and Cr–Mo active fluxes on ST37 low carbon steel

Alishavandi

Mohammadmirzaei

Ebadi

et al. 2022

Int J Adv Manuf Technol

View full text Add to dashboard Cite

show abstract

Section: Microstructural Characterizationmentioning

confidence: 99%

Microstructural and Mechanical Evaluations of SAW By Manufactured Granular Basic Bonded Cr, Mo, and Cr-Mo Active Fluxes on ST37 Low Carbon Steel

Alishavandi

Mohammadmirzaei

Ebadi

et al. 2021

Preprint

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Bead-on-plate submerged arc welding was conducted on St37 steel by manufactured Cr, Mo, and Cr-Mo active basic fluxes produced via the unfused bonded method. The base metal heat-affected zone and weld metal (WM) microstructures were identified and characterized by optical microscopy and scanning electron microscopy. Then, the ferrite morphologies volume fraction of WMs were measured. Moreover, the chemical analysis of slag and inclusions was evaluated by point scan energy-dispersive X-ray spectroscopy and extensively discussed. Inclusions number density and size and their effects on the formation of AF were also elaborated. Then, the WMs’ longitudinal tensile strength and Vickers hardness were measured. Finally, the Charpy V-notch test was conducted to determine the impact toughness; the fracture surfaces were investigated, as well.

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“…Some researchers added chemicals to commercial flux to get desired properties in the weld metal and got attractive results. Osorio et al evaluated weld metal's mechanical properties and microstructure after the addition of 3 wt-% of Nb 2 O 5 and NbC to the flux [13]. About 40% of CaO is present in free and compound form in steel slag [14] and, therefore can be used for making flux.…”

Section: Introductionmentioning

confidence: 99%

Utilisation of steel slag as welding flux and its chemical and thermal characterisation

Saini

Singh

2023

Materials Science and Technology

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A novel study on structural analysis of crystalline phases present in steel slag was conducted, which advocates the utilisation of steel slag for developing welding flux. This study plans to characterise chemical and thermal analysis of waste steel slag generated by steel making plant to ensure its compatibility and suitability for manufacturing of flux required for the submerged arc welding process. Based on these studies, five fluxes using steel slag as raw material were developed by the agglomeration process. The required deoxidisers and alloying elements were added during recycling to enhance their performance. The Spectro analysis of weld metal revealed that the carbon content of weld metal has increased from 0.04 to 0.06% with the addition of CaCO3 from 10 to 12%.

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Effect of niobium addition on the flux of submerged arc welding of low carbon steels

Cited by 25 publications

References 14 publications

Microstructural and mechanical evaluations of SAW by manufactured granular basic bonded Cr, Mo, and Cr–Mo active fluxes on ST37 low carbon steel

Microstructural and mechanical evaluations of SAW by manufactured granular basic bonded Cr, Mo, and Cr–Mo active fluxes on ST37 low carbon steel

Microstructural and Mechanical Evaluations of SAW By Manufactured Granular Basic Bonded Cr, Mo, and Cr-Mo Active Fluxes on ST37 Low Carbon Steel

Utilisation of steel slag as welding flux and its chemical and thermal characterisation

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