Journal ArticleDOI
Slag-metal reactions during welding: Part III. Verification of the Theory
U. Mitra,Thomas W. Eagar +1 more
TLDR
In this paper, a previously developed kinetic model of alloy transfer (Part II) is tested experimentally for transfer of Mn, Si, Cr, P, S, Ni, Cu, and Mo.Abstract:
A previously developed kinetic model of alloy transfer (Part II)[1] is tested experimentally for transfer of Mn, Si, Cr, P, S, Ni, Cu, and Mo. The results show very good agreement between theory and experiment. The transfer of carbon and oxygen is also discussed. It is shown that the transfer of oxygen into the weld metal occurs in the zone of droplet reactions, whereas oxygen is lost by formation and separation of inclusions in the solidifying weld pool. Methods of applying this analysis to multipass welds and active fluxes containing ferroalloy additions are also described.read more
Citations
More filters
Journal ArticleDOI
Physical processes in fusion welding
Tarasankar Debroy,Stan A David +1 more
TL;DR: In recent years, major advances have taken place in our understanding of welding processes and welded materials because of the complexity of fusion welding processes, solution of many important contemporary problems in fusion welding requires an interdisciplinary approach as mentioned in this paper.
Journal ArticleDOI
Combined effect of flux and welding parameters on chemical composition and mechanical properties of submerged arc weld metal
TL;DR: In this article, the combined effect of flux mixture and welding parameters on submerged arc weld metal chemical composition and mechanical properties was investigated and it was shown that the two factor interaction effect is higher than the individual effect of mixture related variables.
Journal ArticleDOI
Development of macro- and microstructures of carbon–manganese low alloy steel welds: inclusion formation
TL;DR: Theoretical time-temperature transformation diagrams are calculated for various oxide inclusions based on an overall kinetics approach using nucleation and growth rate expressions, and a strong correlation between the published inclusion composition and the stability of the oxides was found as discussed by the authors.
Journal ArticleDOI
Slag-metal reactions during welding: Part I. Evaluation and reassessment of existing theories
U. Mitra,Thomas W. Eagar +1 more
TL;DR: In this paper, a critical review of current thermodynamic theories of slag-metal reactions is presented, and a series of preliminary experiments indicates that the previously proposed droplet theory is incorrect and the primary reactions controlling Mn, Si, and Cr content occur in the weld pool.
Journal ArticleDOI
Slag-metal reactions during welding: Part II. Theory
U. Mitra,T. W. Eagar +1 more
TL;DR: In this article, a kinetic model is developed to describe the transfer of alloying elements between the slag and the metal during flux-shielded welding, which accounts for changes in alloy recovery based on the geometry of the resulting weld bead.
References
More filters
Book
Physical chemistry of melts in metallurgy
TL;DR: A detailed survey of the chemistry of melts in metallurgy can be found in this article, with a focus on mass transfer involving drops and bubbles in reactions between metals and gases and metals and slags.
Journal ArticleDOI
Slag-metal equilibrium during submerged arc welding
C. S. Chai,Thomas W. Eagar +1 more
TL;DR: In this article, a thermodynamic model of the equilibria existing between the slag and the weld metal during submerged arc welding is presented, which applies only to fused neutral fluxes containing less than 20 pct CaF2, however some results indicate that the model may be useful in more general cases as well.
Related Papers (5)
Slag-metal reactions during welding: Part I. Evaluation and reassessment of existing theories
U. Mitra,Thomas W. Eagar +1 more