Research on Microstructure and Property of Welded Joint of Steel SA516Gr.60 Welded by SMAW Using Domestic Welding Material
The cryogenic steel SA516Gr.60 was welded by SMAW using domestic welding material.The microstructure and properties of the welded joints were investigated.The chemical component test,microhardness test,bending test,tensile test,low temperature impact test,fracture analysis and metallograph observation were carried out.The results show that the welded joint has excellent strength and plasticity,the weld metal with considerable acicular ferrites can improve the low temperature toughness.