Malinov V. Development of theoretical bases of creation of electrode materials, providing of deformation martensite transformation in the deposited metal

Object of study: processes of structure and properties formation deposited metal for various purposes. Subject of research: electrode materials and methods of treatments the deposited parts, which providing improved operational and technological properties due to the multiphase metastable structure. Research methods: metallographic, magnetometric, x-ray diffraction quantitative phase analysis, chemical analysis, testing of mechanical properties and wear-resistance in different conditions. In the dissertation the actual scientific problem development of theoretical bases of creation of the electrode materials providing the increase of operating properties of surfaced details at the expense of dynamic deformation martensite transformation (DDMT) was solved. Ideas about the influence of the phase composition and development DDMT on the properties of weld metal based on Fe-Cr-Mn-C in various conditions of wear of "metal-metal" and "metal-abrasive" was further developed. The regularities of the influence of technological parameters welding regime on the assimilation of alloying elements, characteristics of welding process, forming deposited metal was determined. The direction of the creation of electrode materials for obtain deposited metal with reduced temperature critical points Ac1 and Ac3, in which heating in the inter-critical temperature range provides a multi-phase structure with metastable austenite and increasing wear resistance was proposed. Economic effect from applying of job results is 3452 Thous. UAH.