Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

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STRUCTURE AND PROPERTIES OF STEEL 30ХГСА AFTER LASER-PLASMA NITRIDING AND NANOSTRUCTURING

Pavlov M.D. 1 Cherdyntsev V.V. 1 Stepashkin A.A. 1 Danilov V.D. 1
1 National University of Science and Technology “MISIS”
To improve quality and reliability of steel products surfaces the method of surface treatment using the concentrated streams local energy such as electron-beam and laser was proposed. The information about the possibility of using a laser-plasma nitriding to change the properties and structure of the surface layers of steel products was provide in order to reduce mechanical wear of working surfaces. The task was to study the effect of laser-plasma treatment on the structure and hardness of the surface layer of steel. The basic principle of this treatment is the saturation the molten metal surface with nitrogen from laser plasma. During molten metal crystallization occurs the formation of fine nitrides which crushed and the reinforcing microstructure of material. The analysis of changes in the surface layers structure example steel 30ХГСА was done using optical and electron microscopy.