Impact of gas formation on the transfer of Ti and O from TiO2-bearing basic-fluoride fluxes to submerged arc welded metals: A thermodynamic approach. (December 2020)

• Record Type: Journal Article
• Authors: Zhang, Jin; Coetsee, Theresa; Basu, Somnath; Wang, Cong
• Is Part Of: Calphad. Volume 71(2020)
• Publication Date: 2020-12
• Subjects: Submerged arc welding -- TiO2-Bearing flux -- Basic-fluoride flux; Phase diagrams -- Data processing -- Periodicals; Thermochemistry -- Data processing -- Periodicals; Diagrammes de phases -- Informatique -- Périodiques; Thermochimie -- Informatique -- Périodiques; Thermodynamica; Electronic journals; 541.363
• DOI: 10.1016/j.calphad.2020.102195
• Languages: English
• ISSNs: 0364-5916

Abstract

Abstract: Gas-slag-metal equilibrium calculations are performed to investigate the transfer of Ti and O to submerged arc welded metals with increasing TiO2 addition in basic-fluoride fluxes. The results indicate that activities of TiO2 and Ti2 O3 considering slag-metal reactions alone do not account for Ti transfer behaviors since TiF3 gas tends to form and reduce Ti-oxide activities. Thermodynamic simulation indicates that consideration of gases is essential to improve the prediction accuracy of Ti and O concentrations.