Structure and mechanical properties of multicomponent AlNiCoFeCrTiMo alloy obtained by mechanical alloying and sintering

Скорочена інформація про документ
dc.contributor.advisorYurkova, A. I.
dc.contributor.authorShao, Yiru
dc.date.accessioned2023-05-12T09:02:02Z
dc.date.available2023-05-12T09:02:02Z
dc.date.issued2021
dc.description.abstractotherThe purpose of the work is to study the structure and mechanical properties of AlNiCoFeCrTiMo HEA obtained by mechanical alloying and sintering. In order to achieve this purpose, the following tasks are solved: 1) The selection and justifying alloy powder compositions applying the phase formation empirical rules to obtain solid solutions in high-entropy alloys (determination of the mixing entropy; mixing enthalpy; the difference of atomic radii δ; the valence electron concentration (VEC), and calculate the necessary batches. 2) Fabrication of the high-entropy alloy powders by mechanical alloying and study its structure and phase composition as well as thermal stability. 3) Selection the sintering method for conservation of nanostructure and phase composition in HEA after mechanical alloying; production compact samples. 4) Analyse the structure, phase and chemical composition, as well as mechanical properties. 5) Analyse the results of the experiment and draw conclusions. Research methods and equipment: The mechanical alloying was carried out in a planetary ball mill; Spraying was performed on a DYMET 405 setup. The structure and phase composition were studied using a scanning electron microscope, REMMA—106I and X-ray diffractometer, Ultima IV. The NETZSCH differential scanning calorimeter is used to measure the differential scanning calorimetry signal (DSC) curve of the HEA. Microhardness was determined by indentation on a PMT-3 and Micron Gamma machine. Scientific novelty of the results: Comparing the microstructure and mechanical properties of pressure sintering and SPS sintered HEA, it can be concluded that, the high-entropy alloy prepared by pressure sintering has better microstructure and high mechanical properties. Tests have proved that the AlNiCoFeCrTiMo high-entropy alloy prepared by MA-SPS has higher strength and hardnessuk
dc.format.extent120 с.uk
dc.identifier.citationShao Yiru. Structure and mechanical properties of multicomponent AlNiCoFeCrTiMo alloy obtained by mechanical alloying and sintering : магістерська дис. : 132 Матеріалознавство / Shao Yiru. – Київ, 2021. – 120 с.uk
dc.identifier.urihttps://ela.kpi.ua/handle/123456789/55603
dc.language.isoenuk
dc.publisherКПІ ім. Ігоря Сікорськогоuk
dc.publisher.placeКиївuk
dc.subjecthigh entropy alloyuk
dc.subjectmechanical propertiesuk
dc.subjectmechanical alloyinguk
dc.subjectphase compositionuk
dc.subjectsinteringuk
dc.subjectsolid solutionuk
dc.subjectpowderuk
dc.subjectstructureuk
dc.subject.udc621.793.79uk
dc.titleStructure and mechanical properties of multicomponent AlNiCoFeCrTiMo alloy obtained by mechanical alloying and sinteringuk
dc.typeMaster Thesisuk

Файли

Контейнер файлів
Зараз показуємо 1 - 1 з 1
Ескіз
Назва:
Shao Yiru_mahistr.pdf
Розмір:
2.19 MB
Формат:
Adobe Portable Document Format
Опис:
Завантажити
Ліцензійна угода
Зараз показуємо 1 - 1 з 1
Ескіз недоступний
Назва:
license.txt
Розмір:
9.1 KB
Формат:
Item-specific license agreed upon to submission
Опис:
Завантажити

Зібрання

Магістерські роботи (ВТМПМ)
Магістерські роботи