Effect of Binary Oxide Flux on Weld Shape, Mechanical Properties and Corrosion Resistance of 2205 Duplex Stainless Steel Welds. (6th November 2020)

• Record Type: Journal Article
• Authors: Albaijan, Ibrahim; Hedhibi, Abdeljlil Chihaoui; Touileb, Kamel; Djoudjou, Rachid; Ouis, Abousoufiane; Alrobei, Hussein
• Other Names: Dong Mingdong Academic Editor.
• Is Part Of: Advances in materials science and engineering. Volume 2020(2020)
• Publication Date: 2020-11-06
• Subjects: Materials science -- Periodicals; Materials science; Periodicals; 620.11
• DOI: 10.1155/2020/5842741
• Languages: English
• ISSNs: 1687-8434

Abstract

Abstract : Duplex stainless steel (DSSs) is characterized by excellent corrosion resistance with high strength. Twelve single-component fluxes (TiO2, Fe2 O3, Cr2 O3, ZnO, ZrO2, CaO, Mn2 O3, V2 O5, MoO3, SrO, MgO, and LaO2 ) were tested in the initial experiment using activated Tungsten inert gas (ATIG) technic, and then three couples of oxides were selected as binary fluxes (Fe2 O3 -Cr2 O3, ZnO-Mn2 O3, and V2 O5 -Mn2 O3 ) for the rest of the study. The results show that the depth weld of binary oxides (Fe2 O3 -Cr2 O3, ZnO-Mn2 O3 ) was increased by 3.7 times in comparison with tungsten inert gas (TIG) weld bead. The hardness and the tensile strength of welds carried out with Fe2 O3 -Cr2 O3 and ZnO-Mn2 O3 binary fluxes were close to those of the parent metal. Weld bead executed with ZnO-Mn2 O3 oxides has more capability to withstand sudden loads. Potentiodynamic polarization tests were performed. The metal welded with flux composed of Fe2 O3 -Cr2 O3 has been found the most resistant to corrosion.