A model for the silicon-manganese deoxidation of steel weld metals

Grong, Ø.; Siewert, Thomas A.; Martins, G. P.; Olson, D. L.

doi:10.1007/bf02817277

Cited by 41 publications

(16 citation statements)

References 3 publications

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“…The weld Mn content also works as deoxidizer and desulphurizer in the weld metal. A decrease in the oxygen content in the weld metal can be achieved through a higher Mn/Si ratio [11].…”

Section: Literature Reviewmentioning

confidence: 99%

Effect of Flux Composition on the Percentage Elongation and Tensile Strength of Welds in Submerged Arc Welding

Singh

Khan

Siddiquee

et al. 2016

Archive of Mechanical Engineering

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This experimental study reveals the effects of CaF 2 , FeMn and NiO additions to the base fluxes on tensile strength and percentage elongation of the weld metal. The aim of this study is to develop suitable flux for mild steel for high tensile strength, impact strength and ductility. Bead on plate welds were made using submerged arc welding process. Mathematical model for percentage elongation and UTS of mild steel welds were made. The elements transfer to the welds have been correlated with the above mechanical performance characteristics. The effect of oxygen content on weld elongation and UTS also has been deduced. This study shows that CaF 2 and NiO are the significant factors for tensile strength while FeMn is not significant for tensile strength. However, for elongation besides CaF 2 , the interaction of CaF 2 and FeMn was also found significant. The effects of basicity index of the flux and carbon equivalent of the welds on tensile strength and percentage elongation of the welds have also been evaluated.

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“…The weld Mn content also works as deoxidizer and desulphurizer in the weld metal. A decrease in the oxygen content in the weld metal can be achieved through a higher Mn/Si ratio [11].…”

Section: Literature Reviewmentioning

confidence: 99%

Effect of Flux Composition on the Percentage Elongation and Tensile Strength of Welds in Submerged Arc Welding

Singh

Khan

Siddiquee

et al. 2016

Archive of Mechanical Engineering

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“…[1] By the extended application of the powder formed steel materials via the powder fusion (liquid-solid transition)-based process, [2] the fundamental understanding of inclusion formation and evolution was demanded due to its non-equilibrium nature [3] for the powder manufacturing and additive manufacturing (AM) technology marching into the structure component business. [4][5][6] The inclusion evolution under the non-equilibrium state has been addressed in the steel welding research; [7][8][9][10] however, due to the inherent feedstock difference, the inclusion/oxide systems between the steel welding and the powder-formed steel fusion are less comparable. The early study of the inclusion evolution in powder fusion has focused on the processing aspect.…”

Section: Introductionmentioning

confidence: 99%

Oxide Evolution During the Solidification of 316L Stainless Steel from Additive Manufacturing Powders with Different Oxygen Contents

Yang

Tang

Hao³

et al. 2021

Metall Mater Trans B

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The oxide evolution during the solidification of 316L stainless steel from additive manufacturing powders with different oxygen contents is studied by in situ observation of the melting and solidification of the powder materials, advanced characterization of the solidified materials, and non-equilibrium thermodynamic analysis. An oxide evolution map is established for the 316L powders with different oxygen contents. It reveals the relationship between the surface oxidation in the reused powder and its expected oxide species and morphology in the as-solidified component. For the 316L powder with oxygen content higher than ~ 0.039 pct, the liquid oxide formed first from the steel melt and then crystallized to certain oxide phases during solidification, while for the powder with lower oxygen, oxide phases are suggested to directly form from the steel melt. The oxide species in the as-solidified sample was predicted by the Scheil–Gulliver cooling calculation and verified by the TEM-based phase identification. The oxides formed in the melt of low O 316L alloy (0.0355 pct O) are predicted to be (Mn, Cr)Cr2O4 spinel and SiO2 oxide. In the high O (0.4814 pct O) 316L melt solidification, the final oxides formed are (Mn, Cr)Cr2O4 spinel, SiO2 oxide, and Cr2O3 corundum. As an important characteristic of powder materials, the oxygen pick-up due to the powder surface oxidation significantly influences the inclusion evolution in the powder fusion process.

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“…On the contrary, the amount of Mn and Si decreased with the increase of TiO 2 NPs. These results could be described by the following reactions (2,3) [21]. Table 3 shows that the values of the Ti, Oxygen, Mn, Si contains were (1.09%, 4.84%, 9.93% and 3.51%) respectivey, for the welding specimen without TiO 2 NPs.…”

Section: Resultsmentioning

confidence: 73%

Improving Impact Toughness for Welding Joints of Steel by Adding TiO2 Nanoparticales

Al-Obaid¹,

Yasir²,

Thahab³

2020

J Appl Mech Eng

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The using of nanotechnology in the welding process has great importance in developing the mechanical properties of welding joints for metals. This paper investigated the effect of addition TiO 2 NPs to welding joints to improving the Impact toughness property of the welding joints. The cold spray coating method of the nanoparticles are used to adding the TiO 2 NPs to the welding joints during the welding process. Three weight fraction are used for TiO 2 NPs (0.75%, 1.5%, and 2%). The testing samples were prepared for Impact test, and microstructure by SEM. The results show the increasing in Impact toughness of welded joints with an increase of TiO 2 NPs concentrations. The average Impact toughness for the welded sample without TiO 2 NPs. was (162.4 J), while the average Impact toughness for the welded sample with (1.5)% TiO 2 NPs. was (231.2 J) with improving rate of (42.36%). The Microstructure images by SEM show the adding of TiO 2 NPs decreases the grain size and homogenous region in welded joints cross-section compared with a sample without adding TiO 2 NPs. The EDS analysis show that increase Ti contain and decrease (Mn and Si) contain with increase TiO 2 NPs.

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A model for the silicon-manganese deoxidation of steel weld metals

Cited by 41 publications

References 3 publications

Effect of Flux Composition on the Percentage Elongation and Tensile Strength of Welds in Submerged Arc Welding

Effect of Flux Composition on the Percentage Elongation and Tensile Strength of Welds in Submerged Arc Welding

Oxide Evolution During the Solidification of 316L Stainless Steel from Additive Manufacturing Powders with Different Oxygen Contents

Improving Impact Toughness for Welding Joints of Steel by Adding TiO2 Nanoparticales

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