Beam Current Effect on Microstructure and Properties of Electron-Beam-Melted Ti-6Al-4V Alloy; Journal of Materials Engineering and Performance; Vol. 28, iss. 10

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Parent link:Journal of Materials Engineering and Performance
Vol. 28, iss. 10.— 2019.— [P. 6165-6173]
Tác giả của công ty: Национальный исследовательский Томский политехнический университет Инженерная школа ядерных технологий Отделение экспериментальной физики
Tác giả khác: Pushilina N. S. Natalia Sergeevna, Klimenov V. A. Vasily Aleksandrovich, Cherepanov R. O. Roman Olegovich, Kashkarov E. B. Egor Borisovich, Fedorov V. V. Vasilii Viktorovich, Syrtanov M. S. Maksim Sergeevich, Lider A. M. Andrey Markovich, Laptev R. S. Roman Sergeevich
Tóm tắt:Title screen
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).
Режим доступа: по договору с организацией-держателем ресурса
Ngôn ngữ:Tiếng Anh
Được phát hành: 2019
Những chủ đề:
Truy cập trực tuyến:https://doi.org/10.1007/s11665-019-04344-0
Định dạng: Điện tử Chương của sách
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=662582