Akademik Veri Yönetim Sistemi
MATERIALS RESEARCH EXPRESS, cilt.5, sa.6, 2018 (SCI-Expanded)
A number of methods are used to reduce the risk of corrosion in steel sheets, today. One of these methods is the coating method. Zinc coated (galvanized) steel sheets are frequently used in different industrial branches. However, there is a damage risk on the coating when these types of sheets are joined. In this study, the joinability of DX54D + Z quality galvanized steel sheet by using MIG-Brazing method was examined. Microstructure analysis and the thickness of zinc coatings were investigated in the samples joined in butt and overlap joining types. Mechanical properties of the joints were determined with tensile, hardness and fatigue tests. Microstructure analyses showed that regional differences occurred in the thickness of zinc coating. However, coating continuity was available. Both joining types gave near maximum tensile strength and hardness values. The highest hardness value of approximate to 255 HV was obtained in copper-based filler metal in overlap joining type. According to fatigue test results, base metal had the highest fatigue strength. When joining types were evaluated among themselves, overlap joining gave higher fatigue strength values.