Analysis of changes in the phase and structural state of an aluminum alloy 1933 surface layer, melted by a pulsed electron beam

• Дата: 2020
• Автори: Myla, D.E., Bryukhovetsky, V.V., Lytvynenko, V.V., Poyda, V.P., Poyda, A.V., Klepikov, V.F., Uvarov, V.T., Lonin, Yu.F., Ponomarev, A.G.
• Формат: Стаття
• Мова: English
• Опубліковано: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2020
• Назва видання: Вопросы атомной науки и техники
• Теми: Physics of radiation damages and effects in solids
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/194360
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Analysis of changes in the phase and structural state of an aluminum alloy 1933 surface layer, melted by a pulsed electron beam / D.E. Myla, V.V. Bryukhovetsky, V.V. Lytvynenko, V.P. Poyda, A.V. Poyda, V.F. Klepikov, V.T. Uvarov, Yu.F. Lonin, A.G. Ponomarev // Problems of atomic science and tecnology. — 2020. — № 2. — С. 33-38. — Бібліогр.: 19 назв. — англ.

The structural and phase changes in the surface layer of an aluminum alloy 1933 caused by the action of a relativistic pulsed electron beam are studied. The structural and phase state of this layer is determined by the impact action of the electron beam and by the kinetics of crystallization from the melt under ultrafast cooling. The impact of a pulsed electron beam is accompanied by the formation of a developed surface relief and the appearance of microcracks on it. The structure of the modified layer is nonequilibrium. X-ray diffraction studies and the results of energy dispersive X-ray microanalysis made it possible to determine that magnesium oxide inclusions are present in the remelted layer. MgO inclusions are generally uniformly distributed in the remelted layer. The maximum size of MgO inclusions does not exceed 1 μm. The causes and mechanisms of the formation of magnesium oxide during the action of a pulsed electron beam are discussed.