Comparative investigation of the influence of ultrafine-grained state on deformation and temperature behavior and microstructure formed during quasi-static tension of pure titanium and Ti-45Nb alloy by means of infrared thermography E. V. Legostaeva, A. Y. Eroshenko, V. P. Vavilov [et al.]
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ArticleContent type: Текст Media type: электронный Subject(s): биоинертные сплавы | ультрамелкозернистое состояние | сильная пластическая деформация | микроструктура | механические свойства | истинные кривые растяжения | накопление и диссипация энергии | инфракрасная термография | просвечивающая электронная микроскопияGenre/Form: статьи в журналах Online resources: Click here to access online
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Materials Vol. 15, № 23. P. 8480 (1-17)Abstract: A comprehensive study was performed of the deformation and temperature behavior during quasi-static tension, as well as the peculiarities of accumulation and dissipation of energy during plastic deformation. Microstructural analysis at the pre-fracture stage of pure titanium and Ti-45Nb alloy in the coarse grain (CG) and ultrafine-grained (UFG) states was also conducted. It was shown that substructural and dispersion hardening leads to a change in the regularities of dissipation and accumulation energies during deformation of the samples of the pure titanium and Ti-45Nb alloy in the UFG state. Some features of structural transformations during deformation of the pure titanium and Ti-45Nb alloy samples in the CG and UFG states were studied. A band and cellular-network and fragmented dislocation structure was formed in the case of the CG state, while large anisotropic fragments were formed in the UFG state, thus specifying a local softening of the material before fracture.
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A comprehensive study was performed of the deformation and temperature behavior during quasi-static tension, as well as the peculiarities of accumulation and dissipation of energy during plastic deformation. Microstructural analysis at the pre-fracture stage of pure titanium and Ti-45Nb alloy in the coarse grain (CG) and ultrafine-grained (UFG) states was also conducted. It was shown that substructural and dispersion hardening leads to a change in the regularities of dissipation and accumulation energies during deformation of the samples of the pure titanium and Ti-45Nb alloy in the UFG state. Some features of structural transformations during deformation of the pure titanium and Ti-45Nb alloy samples in the CG and UFG states were studied. A band and cellular-network and fragmented dislocation structure was formed in the case of the CG state, while large anisotropic fragments were formed in the UFG state, thus specifying a local softening of the material before fracture.
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