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Title: Fatigue behaviour of CG and UFG titanium: DIC and fractography studies
Authors: Eremin, Alexandr Vyacheslavovich
Panin, Sergey Viktorovich
Sharkeev, Yury Petrovich
Keywords: усталостное поведение; титан; фрактография; цифровая коррекция; изображения; сканирующая электронная микроскопия; пластическая деформация; трещины; макротрещины
Issue Date: 2019
Publisher: IOP Publishing
Citation: Eremin A. V. Fatigue behaviour of CG and UFG titanium: DIC and fractography studies / A. V. Eremin, S. V. Panin, Yu. P. Sharkeev // IOP Conference Series: Materials Science and Engineering. — Bristol : IOP Publishing, 2019. — Vol. 511 : Perspective Materials of Constructional and Medical Purpose : International Scientific and Technical Youth Conference, 26–30 November 2018, Tomsk, Russian Federation : [proceedings]. — [012012, 6 p.].
Abstract: The manuscript is devoted to the investigation of fatigue behaviour of coursegrain (CG) and ultrafine-grain (UFG) titanium grade 2 by means of digital image correlation (DIC) and scanning electron microscopic fractography. The UFG state has been obtained utilizing severe plastic deformation technique. The results show that the high amount of defects (grain boundaries, dislocations, etc.) in UFG suppress plastic deformation and leads to earlier crack initiation, however at the macrocrack growth stage these impurities are obstacles for transgranular mechanism of fracture.
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