Bonding of titanium alloy sheet and stainless steel web

The seam resistance welding and vacuum diffusion welding of Ti6Al4V titanium alloy and 00Cr18Ni13 stainless steel with different welding parameter were investigated and the microstructure of joints were analyzed by scanning electron microscope and X-ray energy dispersive analysis. The results showed that the occurrence of tension stress and brittle intermetallics phase are inevitable in joints and microcracks will be observed. Seam resistance welding and low parameter can not eliminate the welding defects but decrease them. Vacuum diffusion welding with high parameter can result in poor fusion, cracks.Joint with titanium as transition layer which physical grip possesses good properties.