Welding joint of 1Cr18Ni9Ti steel was treated by laser melting and then microstructure and property of the welding joint were examined by means of OM, SEM, corrosion test and tensile test. The results show that the laser melting layer exhibits better corrosion resistance than stainless steel substrate. Especially, corrosion resistance of the region closing to the welding seam is improved. The tendency of stress corrosion of the region declines and intergranular corrosion resistance of stainless steel increases after laser melting, and it is be...
