Beam Current Effect on Microstructure and Properties of Electron-Beam-Melted Ti-6Al-4V Alloy / N. S. Pushilina, V. A. Klimenov, R. O. Cherepanov [et al.]

Уровень набора: Journal of Materials Engineering and PerformanceАльтернативный автор-лицо: Pushilina, N. S., physicist, associate Professor of Tomsk Polytechnic University, candidate of physico-mathematical Sciences, head of laboratory, 1984-, Natalia Sergeevna;Klimenov, V. A., specialist in the field of non-destructive testing, Professor of Tomsk Polytechnic University, Doctor of technical sciences, 1951-, Vasily Aleksandrovich;Cherepanov, R. O., Physicist, Research Fellow of Tomsk Polytechnic University, Candidate of physical and mathematical sciences, 1982-, Roman Olegovich;Kashkarov, E. B., Physicist, Associate Scientist of Tomsk Polytechnic University, Assistant, 1991-, Egor Borisovich;Fedorov, V. V., Specialist in the field of mechanical engineering, Director of Research and Education Center Tomsk Polytechnic University, 1983-, Vasilii Viktorovich;Syrtanov, M. S., physicist, engineer of Tomsk Polytechnic University, 1990-, Maksim Sergeevich;Lider, A. M., Physicist, Associate Professor of Tomsk Polytechnic University, Candidate of Physical and Mathematical Sciences (PhD), 1976-, Andrey Markovich;Laptev, R. S., physicist, specialist in the field of non-destructive testing, Associate Scientist of Tomsk Polytechnic University, Assistant, Candidate of Sciences, 1987-, Roman SergeevichКоллективный автор (вторичный): Национальный исследовательский Томский политехнический университет, Инженерная школа ядерных технологий, Отделение экспериментальной физикиЯзык: английский.Резюме или реферат: In this study, a noncommercial 3D printing machine was used to fabricate Ti-6Al-4V alloy by electron-beam melting (EBM). The influence of beam current on the microstructure, phase composition and mechanical properties of electron-beam-melted Ti-6Al-4V alloy was investigated. Numerical simulation is implemented to evaluate thermal fields during electron-beam melting of Ti-6Al-4V powder. The decrease in beam current from 3.5 to 2.5 mA leads to refinement of microstructure: The average width of ? plates decreases from 10 down to 6 ?m. The formation of finer microstructure is attributed to higher cooling rate at lower beam current confirmed by simulation. The phase composition of EBM Ti-6Al-4V indirectly depends on the beam current. High content of ? phase (7%) was achieved at the beam current of 3 mA. The produced Ti-6Al-4V samples are characterized by high microhardness (470-520 HV)..Примечания о наличии в документе библиографии/указателя: [References: 28 tit.].Аудитория: .Тематика: электронный ресурс | труды учёных ТПУ | additive manufacturing | electron-beam melting | microhardness | microstructure | simulation models | Ti-6Al-4V titanium alloy | производство | добавки | электронно-лучевая плавка | микротвердость | микроструктура | имитационные модели | титановые сплавы Ресурсы он-лайн:Щелкните здесь для доступа в онлайн
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[References: 28 tit.]

In this study, a noncommercial 3D printing machine was used to fabricate Ti-6Al-4V alloy by electron-beam melting (EBM). The influence of beam current on the microstructure, phase composition and mechanical properties of electron-beam-melted Ti-6Al-4V alloy was investigated. Numerical simulation is implemented to evaluate thermal fields during electron-beam melting of Ti-6Al-4V powder. The decrease in beam current from 3.5 to 2.5 mA leads to refinement of microstructure: The average width of ? plates decreases from 10 down to 6 ?m. The formation of finer microstructure is attributed to higher cooling rate at lower beam current confirmed by simulation. The phase composition of EBM Ti-6Al-4V indirectly depends on the beam current. High content of ? phase (7%) was achieved at the beam current of 3 mA. The produced Ti-6Al-4V samples are characterized by high microhardness (470-520 HV).

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