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Information × Registration Number 0218U002727, 0116U006656 , R & D reports Title " Development high-entropy alloys and creation on their basis of a new class of oxide dispersion strengthened materials with high radiation resistance and improved physical and mechanical properties" popup.stage_title Head Tikhonovsky Mikhail Andreyevich, Кандидат фізико-математичних наук Registration Date 25-05-2018 Organization National Science Center "Kharkiv Institute of Physics & Technology" popup.description2 By the method of arc melting made ingots of high-entropy alloys of three compositions (in at%): E3 (20Cr-20Fe-20Mn-20Ni-20Co), E31 (18Cr-27Fe-27Mn-28Ni) and E32 (20Cr-40Fe-20Mn -20Ni), which in the cast state had the structure of solid solutions with an fcc lattice. The experimental technology of the process of mechanical alloying of high-entropy alloys with nanooxides of the system 80Y2O3-20ZrO2 and methods of compacting the obtained powders have been developed. From the obtained powders of the ODS HEAs the ribbons were made, on which the structure and mechanical properties were studied. Structural studies have shown that the average grain sizes in alloys of E 3 and E 32 were about 2 mkm, and for E 31, about 5 mkm, Oxide precipitations for all alloys are characterized by the presence of both small particles of about 10 nm in size and large ones (up to 150 nm). The density of oxide precipitates is 1014 cm-3. The composition of the oxides includes not only Y and Zr, but also the matrix elements of the alloys. The mechanical properties of the ODS alloys obtained are studied. Yield strength for ODS HEAs increased by 2 times compared with the initial state, the tensile strength remained practically unchanged, and the ductility was about 20% at a temperature of 20 ° C. Product Description popup.authors Єфімов О. Андрієвська Н. Великодний О. Воєводін В. Кісляк І. Кальченко О. Колодій І. Кондратов О. Купріянова Ю. Литовченко С. Назаренко Є. Онищенко Л. Панов В. Пилипенко М. Рудичева Т. Стоєв П. Сторожилов Є. Тихоновський М. Тортика О. Чишкала В. popup.nrat_date 2020-04-02 Close