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Information × Registration Number 0218U006885, 0115U001553 , R & D reports Title Development and expansion of high-vacuum technologies for creating new nanostructured magnesium alloys with improved characteristics popup.stage_title Head Papirov Igor Isakovich, Registration Date 05-10-2018 Organization National Science Center "Kharkiv Institute of Physics & Technology" popup.description2 Modes of intense plastic deformation and subsequent heat treatment have been developed, which made it possible to obtain billets of magnesium alloy WE43 with a fine-grained structure (d?3 ?m) and a combination of high values strength (?t = 295 MPa, ?в= 353 MPa) and plasticity (? = 22.5% ). These alloys are designed for the manufacture of tubes from which after that biosoluble cardiovascular stents were manufactured. It is established that further deformation of fine-grained material in the process of obtaining tubes by drawing is accompanied by an increase in the average grain size, an increase distinction in size grains , and a certain decrease in mechanical properties. In this case, the purer the raw material used to produce ingots, the more difficult is the process of grinding the grains during deformation because of by facilitating the relaxation processes in the stress field. On the fine-grained alloy WE43, the phenomenon of the growth of the sizes of the coherent scattering regions under the conditions of hold at room temperature was also observed. The established features should be taken into account with further improvement of the technology of manufacturing fine-grained and nanocrystalline materials and their operation. A new phenomenon is discovered: the deformation softening of low-melting materials, which is associated with the possibility of dynamic recrystallization and the growth of grains in the stress field at room temperature. These processes also depend significantly on the purity of the materials studied. Product Description popup.authors Ємлянінова Т.Г. Єфімов О.А. Биковський А.І. Кисляк І.Ф. Ковтеба О.Г. Колодій І.В. Кондратов О.О. Кутній К.В. Ляшенко О.А.. Мазін О.І. Пікалов А.І. Панов В.А. Рудичева Т.Ю. Сівцов С.В. Стоєв П.І. Тихоновська Т.М. Тихоновський М.А. Шокуров А.В. Шокуров В.С. popup.nrat_date 2020-04-02 Close