Effect of Ultrasonic Impact Treatment on Structural Phase Transformations in Ti-6Al-4V Titanium Alloy; Physical Mesomechanics; Vol. 25, iss. 3

Effect of Ultrasonic Impact Treatment on Structural Phase Transformations in Ti-6Al-4V Titanium Alloy; Physical Mesomechanics; Vol. 25, iss. 3

Bibliographische Detailangaben
Parent link:	Physical Mesomechanics Vol. 25, iss. 3.— 2022.— [P. 248-258]
Körperschaft:	Национальный исследовательский Томский политехнический университет Инженерная школа ядерных технологий Отделение экспериментальной физики
Weitere Verfasser:	Perevalova O. B. Olga Borisovna, Panin A. V. Alexey Viktorovich, Kazachenok M. S. Marina Sergeevna, Sinyakova E. A. Elena Aleksandrovna
Zusammenfassung:	Title screen Ultrasonically treated Ti-6Al-4V alloy samples were examined by X-ray diffraction analysis and transmission electron microscopy, which revealed the formation of a 1-?m-thick layer with the nanocrystalline structure of titanium oxides TiO2 (brookite and srilankite) and ? phase on their surface. Beneath the oxide layer there is a nanocrystalline structure of the ? + ? phases. At a depth of 2 to 40 ?m from the surface, the grain structure changes from nanocrystalline to microcrystalline. At a depth of 75 ?m, the grain size is equal to that of the initial untreated alloy. The surface layers of the titanium alloy experience macroscopic elastic compressive stresses of 0.8 GPa. Their generation is accompanied by microdeformation of the ?-phase lattice. The change in the parameters of the ?-Ti solid solution after ultrasonic treatment indicates an increase in the concentration of vanadium and oxygen in the solid solution. Ultrasonic treatment causes the local ? > ?" martensitic transformation in the ? phase of grain-boundary layers, due to which these layers become two-phase (? + ?"). The use of a carbon lubricant during ultrasonic treatment leads to a decrease in the volume fraction of titanium oxides in the surface layers. Режим доступа: по договору с организацией-держателем ресурса
Sprache:	Englisch
Veröffentlicht:	2022
Schlagworte:	труды учёных ТПУ электронный ресурс titanium alloys ultrasonic treatment X-ray diffraction analysis transmission electron microscopy phase analysis martensitic transformations титановые сплавы ультразвуковая обработка рентгеноструктурный анализ электронная микроскопия
Online-Zugang:	https://doi.org/10.1134/S1029959922030055
Format:	Elektronisch Buchkapitel
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=669380

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