Влияние химического состава стали на образование бейнито-мартенситных участков в структуре бунтового проката сварочного назначения

Abstract

It is shown that the main principles of increasing the technological plasticity of the welding wire rods are: reduction the doping general degree of the solid solution by diminishing the manganese and silicon contents in carbon steel (in the framework of the requirements of the normative documentation); reduction of microdeformation of the crystal lattice of ferrite and density of dislocations by reducing the number of atoms of nitrogen in the solid solution, which is achieved by binding nitrogen with boron into finely dispersed boron nitride at a ratio of the content of boron and nitrogen, close to stoichiometric.