Sensitization Behavior of Gnaw Austenitic Stainless Steel Joints
نویسندگان
چکیده
The present work has been carried out to study the sensitization behavior of AISI 304L austenitic stainless steel weld, fabricated using GTAW (gas tungsten arc welding process). This weld was subjected to post weld thermal aging (PWTA) treatments lying in the sensitization range, viz. 700 ?C for 30 minutes, 500 minutes and 1000 minutes for studying the influence of carbide precipitation on their metallurgical and corrosion properties. Microstructural studies of these weldments showed that all welds were essentially austenitic with the presence of a small amount of ?-ferrite. The microstructure of the welds was dendritic and ?-ferrite phase placed in interdendritic regions. The weld metal exhibits largely vermicular morphology of ?-ferrite, and
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