Raden Dadan Ramdan, M Agus Kariem, Oki Neswan, Fadhil Wiriawan, Rochim Suratman, Bambang Widyanto, Riza Wirawan
Metallurgy of HAZ at both metals after dissimilar metal welding is important to be evaluated, because differences in metallurgical characteristics due to heating effect on bothHAZ might take place after the process. For the case of austenitic stainless steel, metallurgical aspects that should be considered after welding are the formation of chromium carbide (sensitization) and delta ferrite phase. In the present research, focus is given on the HAZ microstructure and hardness both after welding and post-heat treatment process. Microstructure observation was carried out by optical microscope and Scanning Electron Microscope (SEM), whereas hardness testing was carried out by micro-Vickers method. From this study, it can be concluded that the increase in heat treatment temperature can reduce the volume fraction of delta ferrite and chrome carbide precipitation, whereas hardness at the HAZ region decreases after the heat treatment. © Published under licence by IOP Publishing Ltd.
Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Jl. Ganesa no 10, Bandung, 40132, Indonesia; Faculty of Mathematic and Natural Science, Institut Teknologi Bandung, Jl. Ganesa No 10, Bandung, 40132, Indonesia; Jakarta State University, Department of Mechanical Engineering, Jl. Rawamangun Muka, Jakarta, 13220, Indonesia
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