Suherman, Ilmi, C.P. Sitompul, H.B. Kurniyanto, Suprapto
The aim of the study to investigate the effect of welding current on the microstructure and mechanical properties of gas tungsten arc welding (GTAW) for dissimilar austenite Stainless steel (AISI 309 and 201). Three models of welding currents have been used and their effect on microstructure and mechanical properties investigated. The results reveal that increase of welding currents improved the ultimate tensile strength (UTS) however, the hardness of the weld zone and Heat Affected Zone (HAZ) are similar. On the other hand, the microstructure of base metal AISI 309 and 201of austenite, ferrite structure, and ẟ ferrite of AISI 309 stainless steel were observed. © 2021 Trans Tech Publications Ltd, Switzerland.
Department Mechanical Engineering, University of Muhammadiyah Sumatera Utara, Medan, Indonesia; Department Mechanical Engineering, University of Sumatera Utara, Medan, Indonesia; Department Mechanical Engineering, Medan Institute of Technology, Medan, Indonesia; Department Welding Engineer Politeknik Perkapalan Negeri Surabaya, Surabaya, Indonesia; Department Mechanical Engineering, State University of Medan, Medan, Indonesia; Department Mechanical Engineering, Chung Yuan Christian University, Taoyuan, Taiwan
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