Effect of Nitrogen Implantation on the Structure and Properties of Austenitic Corrosion-Resistant Steels

Work is devoted to studying the effect of implantation of nitrogen ions into the surface of austenitic stainless steels to improve their functional properties. Four grades of austenitic corrosion-resistant steels 02H16N10M2, 08H15AG10D2, 06H15AG9NM2 and 09H15AG9ND2 were taken after cold plastic deformation and annealing from 680 ∘C in water and subsequent implantation with N+ ions with different radiation dose: 0,01 и 0,1%. It was found that irradiation of austenitic stainless steels with nitrogen ions can be considered an effective way to increase the hardness and yield strength of steels in the operation in a corrosive environment.     Keywords: steel, austenite, nitrogen implantation, hardness, corrosion resistanc

The effect of intense external influences on the structure and properties of alloys

For the production of special high-wire thin and very thin sections austenitic steel has been widely adopted.Developed carbon-free highly alloyed Fe-Cr-Ni based steel in the quenched condition has a high plasticity,manufacturability and low strength. High adaptability of these steels allowed conducting extensive plasticdeformation as shear under pressure and drawing. Prerequisite for a high plasticity and adaptability of thedeveloped steels are: their doping with low carbon, 0.03% C, as well as cobalt and nickel content, whichincrease the plasticity of steels. Secondly, the presence of strain-metastable austenite, which during severeplastic deformation is almost completely transformed into deformation martensite and the related TRIP-effect.Especially important is the fact that thanks to high steels manufacturability, the effect of severe plasticdeformation leads to the formation of submicro- and nanocrystalline structure (mainly with high-anglemisorientations at grain boundaries with high strength) in long workpieces. The aging of the deformed steelscauses an additional increase of mechanical properties, which is associated with the occurrence of asupersaturated BCC solid solution (strain martensite). The resulting allocation of intermetallic phase NiAl isnanocrystalline, which is especially important in obtaining the finest wire diameters. It should be noted thatageing can be performed on finished products