Microstructure and properties of resistance element welding joints of low-carbon steel and titanium with a titanium rivet
Resistance element welding was performed on 2 mm thick titanium and Q235 low-carbon steel plates using titanium rivets as element components.Microstructure of each region in the joint was observed using scanning electron microscopy,and the influence of welding parameters on the tensile shear load and cross tension load of the joint was analyzed.The results show that the tensile shear load and cross tension load of the resistance element welding joints of low-carbon steel/titanium show a trend of first increasing and then decreasing with the increase of welding current and welding time.When the rivet leg diameter is 8 mm,the welding time is 300 ms,and the welding current is 12 kA,the tensile shear load and cross tension load of the joint are 11.26 and 7.39 kN,respectively.When using resistance element welding to weld low-carbon steel/titanium,the leg diameter of the rivet is within the range of 4-8 mm,the larger the leg diameter of the rivet used,the wider the range of welding parameters that can be selected.
titaniumlow-carbon steelresistance element welding
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