Microstructure and Properties of Weld of 06Cr20Ni11 Steel by Submerged Arc Welding

06Cr20Ni11 steel was welded by submerged arc welding with SJ601A flux and HS308L welding wire. The microstructure and properties of the joint weld were studied by methods such as macroscopic and microscopic observation, chemical composition analysis, tensile test, impact test and intergranular corrosion test. The results show that the weld was well formed, and the surface was free of sticky slag, porosity and pitting defects. The X-ray flaw detection results showed the weld level was level I. The weld metal was solidified in the ferrite-austenite mode, and the microstructure of the weld metal consisted of austenite and a small amount of dendritic δ ferrite. The tensile properties and impact resistance of the weld metal met the standard requirements, the impact fracture mode was ductile fracture and the weld showed excellent resistance to intergranular corrosion.