Effect of Heat Treatment Process on Microstructure and Properties of Forged 430F Ferritic Stainless Steel
Forging and different post-forging heat treatment processes for 430F ferritic stainless steel in rolled condition.The effects of microstructure and properties of the forging 430F stainless steel at different heat treatment processes are stud-ied by metallurgical structure,microhardness,tensile properties and fracture analysis of the test steel after heat treatment.The study shows that 430F stainless steel after forging,850℃×4 h high temperature annealing,cooling with the furnace,550℃out of the air-cooled,and then 350℃×10 h tempering,cooling with the furnace,the microstructure of its composi-tion by the ferrite single-phase ferrite matrix,the distribution of a large number of fine and uniformly distributed spherical carbides along the grain boundary precipitation σ-phase number is the least.The tensile strength of the test steel is 516 MPa,the hardness is 181 HV,and the elongation rate reaches 29.9% .There are a large number of regular toughness nests on the fracture surface,and the test steel has good plasticity and toughness.
万方数据
维普
