$Scale levels of quasi-static and dynamic fracture behavior of Ti-6Al-4V parts built by various additive manufacturing methods; Theoretical and Applied Fracture Mechanics; Vol. 110$

Scale levels of quasi-static and dynamic fracture behavior of Ti-6Al-4V parts built by various additive manufacturing methods; Theoretical and Applied Fracture Mechanics; Vol. 110

Bibliographic Details
Parent link:	Theoretical and Applied Fracture Mechanics Vol. 110.— 2020.— [102781, 10 p.]
Corporate Authors:	Национальный исследовательский Томский политехнический университет Инженерная школа новых производственных технологий Отделение материаловедения, Национальный исследовательский Томский политехнический университет Инженерная школа ядерных технологий Отделение экспериментальной физики
Other Authors:	Panin A. V. Alexey Viktorovich, Kazachenok M. S. Marina Sergeevna, Panin S. V. Sergey Viktorovich, Berto F. Filippo
Summary:	Title screen Comparison of the microstructure and the phase composition of the Ti-6Al-4V alloy parts built by various additive manufacturing technologies was carried out by optical and transmission scanning electron microscopy, as well as X-ray diffraction analysis. It was shown that the martensitic ?? phase, formed due to the melt pool fast cooling rate, determined the accommodation mechanisms of shear deformation of the as-built Ti-6Al-4V AM fabricated samples under uniaxial quasi-static tension and impact bending (and, accordingly, their mechanical properties). The effect of microstructure on impact toughness, ultimate impact strength, as well as the crack initiation and propagation energy was investigated by the impact bending tests with recording impact load diagram (force–displacement graph). It was concluded that impact toughness of the Ti-6Al-4V samples built by wire-feed electron beam additive manufacturing was significantly higher than that of ones manufactured by selective laser melting and electron beam melting of a powder. Matching the mechanical properties and SEM micrographs of the fracture surfaces of the as-built Ti-6Al-4V AM fabricated samples enabled to reveal the crack initiation and propagation mechanisms during their quasi-static and dynamic loading. Discussion of the results was carried out using the concept of scale levels of plastic deformation. Режим доступа: по договору с организацией-держателем ресурса
Language:	English
Published:	2020
Subjects:	электронный ресурс труды учёных ТПУ additive manufacturing titanium microstructure fracture tension impact bending титан микроструктура напряжение ударный изгиб
Online Access:	https://doi.org/10.1016/j.tafmec.2020.102781
Format:	Electronic Book Chapter
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=662992