Study of macroplastic flow in surface layers of porous titanium nickelide by digital image correlation E. S. Marchenko, A. A. Klopotov, A. M. Ustinov [et al.]
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ArticleContent type: Текст Media type: электронный Subject(s): пористый никелид титана | механические свойства | поверхностные слоиGenre/Form: статьи в журналах Online resources: Click here to access online
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AIP Conference Proceedings Vol. 2509. P. 020129-1-020129-4Abstract: The work presents a study the mechanical properties of porous titanium nickelide and to study the evolution of deformation fields at the meso- and macroscopic level on the surface of porous titanium nickelide samples of different thicknesses by the method of correlation of digital images under uniaxial tension. Optical system Vic-3D allows to reveal the peculiarities of evolution in space and time of distributions of deformation fields. With a decrease in the thickness of the samples and with their tension from the averaged deformation over the working field of the sample by more than 0.005%, this leads to an enlargement of the characteristic size of local deformation regions in speckle patterns on the surface of the 3D framework of the porous material. Based on the analysis of the deformation curves two stages of deformation are distinguished. It was found that the values of the deformation hardening coefficient n depend on the sample thickness.
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The work presents a study the mechanical properties of porous titanium nickelide and to study the evolution of deformation fields at the meso- and macroscopic level on the surface of porous titanium nickelide samples of different thicknesses by the method of correlation of digital images under uniaxial tension. Optical system Vic-3D allows to reveal the peculiarities of evolution in space and time of distributions of deformation fields. With a decrease in the thickness of the samples and with their tension from the averaged deformation over the working field of the sample by more than 0.005%, this leads to an enlargement of the characteristic size of local deformation regions in speckle patterns on the surface of the 3D framework of the porous material. Based on the analysis of the deformation curves two stages of deformation are distinguished. It was found that the values of the deformation hardening coefficient n depend on the sample thickness.
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