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Information × Registration Number 0215U000335, 0114U000838 , R & D reports Title Investigation of corrosion-adsorbtion aspects of influence of lead melts on durability and degradation of mechanical properties of structural reactory martensitic and austenitic steels popup.stage_title Head Fedirko Viktor, Registration Date 18-02-2015 Organization Karpenko Physico-Mechanical Institute of the National Academy of Science of Ukraine popup.description2 As a result of oxidation the thin filmі based on magnetite and chromium oxide Cr2O3 are formed. Steel oxidation leads to a change in grain size: more essential for ferritic steel and less for austenitic steel. Oxidation of ferritic steels reduces the tensile strength of 20 ... 50%, and reduction in strength correlates with the grain size of the metal after oxidation. Plasticity of oxidized steel decreases. In the lead environment the fracture resistance of oxidised samples decreased as compared with tests in vacuum, the largest decline is proper for oxidation modes leading to the maximum grain size growth. In the presence of lead oxide layer which limits direct contact with the melt surface prevents to embrittlement of ferritic steel. Higher plastisity in lead is provides by oxidation that changes the minimum grain size. Oxidation of austenitic steel leads to an increase in tensile strength and decrease in ductility as compared with the initial state. Plasticity of oxidized steel depends upon the size of grain: grains fall with increasing ductility increases. In lead the strength of oxidized steel although reduced, but remains higher than the strength of the steel in the initial state. Effect of lead on the plasticity of the medium is absent due to the protective effect of the oxide layer. Oxidation reduces the long-term strength ferritic steel as compared to the initial state, and vice versa austenitic steel - increases. Product Description popup.authors Кравчишин Тарас Васильович Кудлак Степан Михайлович Лопушанський Василь Антонович Лук'яненко Олександр Генадійович Матичак Ярослав Степанович Петришин Михайло Стефанович Погрелюк Ірина Миколаївна Ткачук Олег Васильович Труш Василь Степанович Щепанський Ярослав Степанович Яськів Олег Ігорович popup.nrat_date 2020-04-02 Close