A Comparative Study on the Effect of Electrode on Microstructure and Mechanical Properties of Dissimilar Welds of 2205 Austeno-Ferritic and 316L Austenitic Stainless Steel

Abstract

In the present study, the weldability, microstructures and mechanical properties of dissimilar welds (2205 austeno-ferritic and 316L austenitic stainless steel) was investigated by using shielded metal arc welding (SMAW) with the help of two different electrodes namely duplex (E2209) and austenitic (E309L). After welding, the microstructure of the different zones of joints was evaluated by using optical microscopy and scanning electron microscopy (SEM), while, the localized chemical information was obtained by energy dispersive spectrometer (EDS) attached to the SEM. In E2209 weld metal, the solidi cation was observed as the primary ferrite mode. While, 309L weld metal was observed as the primary ferrite with austenitic matrix. Optimum ferrite content was observed in both the electrode. Finally, it was concluded that for the joints between the 2205 austeno-ferritic and 316L austenitic stainless steel, the E2209 electrode was dominant property wise.

Duplex stainless steel of type UNS S32101 and ferritic stainless steel of type AISI 430 subjected to cathodic hydrogenation

“…Due to the rise in nickel prices, since 1990, duplex stainless steels are extensively researched, as explained by Mei and Guimarães [1], Verma et al [2] and Manova and Mändl [3]. Such steels have a favorable combination of the properties of both austenitic and ferritic stainless steels, that is, they have high mechanical strength, good toughness, very good resistance to corrosion in various means and excellent resistance to fatigue and corrosion under stress.…”

Microstructure, Mechanical and Electrochemical Evaluation of Dissimilar low Ni SS and 304 SS using Different Filler Materials

“…The addition of Mn in the 200 series SS has reduced the consumption of Ni as the prime alloying element in SS 6,7,8 . In the fabrication of components of non-magnetic ASS's, welding is the most suitable and versatile joining process. Welding is used widely due to its low price and producing a high-quality joints 9 . Joining of dissimilar metal in industries is highly useful and cost effective in the moderate corrosive environment.…”

Mechanical, Microstructure, and Corrosion Characterization of Dissimilar Austenitic 316L and Duplex 2205 Stainless-Steel ATIG Welded Joints

“…In another study, Verma et al investigated the effects of different filler metals such as E2209, E309LMo, and E309L on dissimilar DSS 2205 and ASS 316L weld beads using multiple weld passes. The obtained tensile strength values were 554 MPa, 544 MPa, and 532 MPa for E2209, E309LMo, and E309L, respectively [ 31 , 32 ].…”