Abstract
In this paper, duplex stainless steel AISI2205 was welded to structural steel EN10025 by Gas Tungsten Arc Welding (GTAW) process using two different filler metals viz., ER2209 and ERNiCr3. The welded joints were free from weld defects. The ultimate tensile strength of the weldments was in the range of 71% to 82 % of the strength of the low-strength constituent (AISI 2205) of the welded assembly. It appears that either of the filler metals could equally be used. The fracture occurred at the heat affected zone (HAZ) of EN10025 in the weldment made using ER2209, while it was within the fusion zone for the weldment made using ERNiCr3. The microhardness in the fusion zones of the weldments fabricated using both the filler metals were lower than that of the base metals.
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