Investigation of detail properties, which are case hardened by alloying elements at the conditions of self-propagating high-temperature synthesis

Abstract

The processes of structure and diffusion SHS-layer formation have been investigated at the surface of high-carbon materials. High-carbon ma- terials of АСЧ-1 grade (GOST 1585-85), СЧ-20, СЧ-25 (GOST 805-95), ВЧ 45-5, ВЧ 38-17, ВЧ 42-12 (DSTU 3925-99), composition materials of УУКМ grade on the basis of «Урал НШ-215» carbon fabric, and ЭГ electrode graphite have been selected for the investigation. The microstructure of work-hardened layers was studied with «Neophot-21» light microscope. The phase analysis was carried out with MS-46 X-ray microanalyzer and ME 76 electronic microscope equipped with an add-on unit. Heat-resistance tests were carried out under GOST 6130-71, adhesion strength test with the conical indenter pressing-in method, wear resistance under GOST 23.224-86, and corrosion resistance by measurement of sample mass before and after test. «ASTRA» software package was used for calculation of the equilibrium composition of the products.