Hydrogen-Induced Phase Transformation and Microstructure Evolution for Ti-6Al-4V Parts Produced by Electron Beam Melting; Metals; Vol. 8, iss. 5

Hydrogen-Induced Phase Transformation and Microstructure Evolution for Ti-6Al-4V Parts Produced by Electron Beam Melting; Metals; Vol. 8, iss. 5

Sonraí bibleagrafaíochta
Parent link:	Metals Vol. 8, iss. 5.— 2018.— [301, 16 p.]
Údar corparáideach:	Национальный исследовательский Томский политехнический университет Инженерная школа ядерных технологий Отделение экспериментальной физики
Rannpháirtithe:	Pushilina N. S. Natalia Sergeevna, Panin A. V. Alexey Viktorovich, Syrtanov M. S. Maksim Sergeevich, Kashkarov E. B. Egor Borisovich, Kudiyarov V. N. Victor Nikolaevich, Perevalova O. B. Olga Borisovna, Laptev R. S. Roman Sergeevich, Lider A. M. Andrey Markovich, Koptyug A. V. Andrey Valentinovich
Achoimre:	Title screen In this paper, phase transitions and microstructure evolution in titanium Ti-6Al-4V alloy parts produced by electron beam melting (EBM) under hydrogenation was investigated. Hydrogenation was carried out at the temperature of 650 °C to the absolute hydrogen concentrations in the samples of 0.29, 0.58, and 0.90 wt. %. Comparative analysis of microstructure changes in Ti-6Al-4V alloy parts was performed using scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD). Furthermore, in-situ XRD was used to investigate the phase transitions in the samples during hydrogenation. The structure of Ti-6Al-4V parts produced by EBM is represented by the ? phase plates with the transverse length of 0.2 ?m, the ? phase both in the form of plates and globular grains, and metastable ?" and ? phases. Hydrogenation to the concentration of 0.29 wt. % leads to the formation of intermetallic Ti3Al phase. The dimensions of intermetallic Ti3Al plates and their volume fraction increase significantly with hydrogen concentration up to 0.58 wt. % along with precipitation of nano-sized crystals of titanium ? hydrides. Individual Ti3Al plates decay into nanocrystals with increasing hydrogen concentration up to 0.9 wt. % accompanied by the increase of proportion and size of hydride plates. Hardness of EBM Ti-6Al-4V alloy decreases with hydrogen content.
Teanga:	Béarla
Foilsithe / Cruthaithe:	2018
Ábhair:	электронный ресурс труды учёных ТПУ electron beam melting additive manufacturing titanium Ti-6Al-4V alloy hydrogen microstructure phase transitions электронно-лучевая наплавка добавки титановые сплавы водород микроструктуры фазовые переходы
Rochtain ar líne:	https://doi.org/10.3390/met8050301
Formáid:	Leictreonach Caibidil leabhair
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=666729

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