Email this article THE STUDY OF PLASTIC DEFORMATION NONUNIFORMITY IN D1 ALLOY USING THE METHOD OF DIGITAL SPECKLE IMAGES CORRELATION
- Authors: Barannikova S.A.1, Li Y.V.2, Bochkareva A.V.3, Zuev L.B.1
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Affiliations:
- Institute of strength physics and materials science of Siberian branch of Russian Academy of Sciences, Tomsk National Research Tomsk State University, Tomsk
- Institute of strength physics and materials science of Siberian branch of Russian Academy of Sciences, Tomsk
- Institute of strength physics and materials science of Siberian branch of Russian Academy of Sciences, Tomsk National Research Tomsk Polytechnic University, Tomsk
- Issue: No 2 (2016)
- Pages: 11-16
- Section: Technical Sciences
- URL: https://vektornaukitech.ru/jour/article/view/298
- DOI: https://doi.org/10.18323/2073-5073-2016-2-11-16
- ID: 298
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Abstract
The paper presents the study of the influence of hydrogen enrichment of D1 aluminum alloy using the electrolytic method on the plastic flow localization. The study was carried out on the aluminum alloy samples before and after hydrogen addition using the three-electrode electrochemical cell. It is determined that hydrogen influences significantly the mechanical properties and plastic flow curves of the material under the study. The analysis of deformation curves staging showed the existence of the following stages of plastic flow: the stage of linear deformation hardening, the stage of parabolic deformation (Tailor) hardening and the stage of pre-destruction. To determine and visualize the zones of localized deformation, the authors used the method of digital speckle images correlation allowing getting the deformation quantitative characteristics, i.e. defining the displacement vector field in flat sample during the tension and then calculating the plastic distortion tensor components (the local stretching εxx, the shift εxy and the turn ωz). When using this methodology in the process of sample loading, the images of deformation evolution and the character of its localization in a deformable sample at various stages of deformation hardening in the initial state and after hydrogen-saturation during 100 hours were determined. The information on the regularities of distribution of the fronts of plastic deformation localization within the material under the study is important for the detailed study of the process of aluminum alloys plastic flow. The study of this process allows predicting at the early stages the area of deformation neck formation and determining the place of future material destruction. Using the X-ray spectrographic microanalysis, the authors got the information on the existence of hardening intermetallic particles.
About the authors
Svetlana Aleksandrovna Barannikova
Institute of strength physics and materials science of Siberian branch of Russian Academy of Sciences, TomskNational Research Tomsk State University, Tomsk
Author for correspondence.
Email: bsa@ispms.tsc.ru
Doctor of Sciences (Physics and Mathematics), leading researcher of laboratory of strength physics, professor of Chair “Deformable solid mechanics”
Russian FederationYuliya Vladimirovna Li
Institute of strength physics and materials science of Siberian branch of Russian Academy of Sciences, Tomsk
Email: jul2207@mail.ru
postgraduate student of laboratory of strength physics
Russian FederationAnna Valentinovna Bochkareva
Institute of strength physics and materials science of Siberian branch of Russian Academy of Sciences, TomskNational Research Tomsk Polytechnic University, Tomsk
Email: avb@ispms.tsc.ru
PhD (Engineering), junior researcher of laboratory of strength physics, assistant professor of Chair “Theoretical and applied mechanics”
Russian FederationLev Borisovich Zuev
Institute of strength physics and materials science of Siberian branch of Russian Academy of Sciences, TomskNational Research Tomsk State University, Tomsk
Email: lbz@ispms.tsc.ru
Doctor of Sciences (Physics and Mathematics), Head of laboratory of strength physics, professor of Chair “Strength and design”
Russian FederationReferences
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