JOURNAL OF THE FACULTY OF ENGINEERING AND ARCHITECTURE OF GAZI UNIVERSITY, cilt.24, ss.23-31, 2009 (SCI İndekslerine Giren Dergi)
In this study, joinability of dissimilar metals by using gas metal arc welding was investigated. For this aim, a ferritic stainless steel (AISI 409) and a low carbon steel (C 1010) were joined at different welding parameters through automated robotic gas metal arc welding process using an austenitic filler metal. Mechanical and metallographic properties of the specimens were obtained by means of tensile test, bending test, microhardness test, impact test and optical microscopy examinations. In the tensile tests, fracture always occurred in the low carbon steel portion of the welded specimens away from the weld zone. Visual observation of the bended specimens showed no crack and tears. For all welding parameters, hardness test results showed that weld metal gave higher hardness value than HAZ and base metal. From the results of metallographic examination, it was seen that grain growth in the weld metal and HAZ increased with increasing heat input.