METALLURGICAL INVESTIGATIONS ON BIMETALLIC WELD JOINTS IN AUSTENITIC/FERRITIC STAINLESS STEELS FOR PAPER-PULP INDUSTRIES

This research article investigated metallurgical and weldability properties of AISI 316L and AISI 430 stainless steel weld-joints obtained by pulsing current gas tungsten arc welding (PCGTAW) process by employing ERNiCr-3 and ER2209 filler wires. Microstructural investigations witnessed the migrated grain boundaries at the weld zone of ERNiCr-3 and coarsened grains were very minimal at ER2209 weldments. This study is highly in demand in paper and pulp industries and successfully addressed the choice of fillers and detailed study has been carried out to analyze the structure-property relationships of these weldments using the combined techniques of scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) analysis.