Preparation and property research of large-sized AF1410 steel bars
Based on the research on the technical requirements of alloying,cleanliness,microstructure unifor-mity,and comprehensive mechanical properties of AF1410 steel,this paper adopts the"VIM+VAR"process route to produce ultra-high strength AF1410 steel bars with a diameter of 300 mm through the rational optimization and control of chemical composition,full utilization of the refining function of VIM(vacuum induction furnace)and VAR(vacuum arc consumable remelting),and the implementation of reasonable forging and forming technology.This bar has high purity,good longitudinal and transverse tensile and impact properties,and longitudinal fracture toughness,and all technical indicators meet the requirements of the relevant aerospace high toughness ultra-high strength steel 16Co14Ni10Cr2MoA(AF1410)bar specifications.At the same time,the longitudinal and transverse low-temperature impact toughness of AF1410 steel at-40℃was tested.
万方数据
维普
