The relationship between the characteristics of the deformation behavior and the evolution of the deformation fields under uniaxial tension aluminum
The in situ relationship between the characteristics of deformation behavior and the evolution in space and time of the distributions of deformation fields under uniaxial tension of flat samples of technically pure aluminum of the A7 grade was studied. When using the Vic-3D digital optical system, the features of the evolution of deformation fields on the surface of the samples at a macroscopic scale level were revealed. It was found that at the transitional stage of the deformation curve in the patterns of distributions of longitudinal strains eYY against the background of macro-uniform deformation on the surface of the entire working part of the sample, the formation of randomly located centers of tension and compression is observed. The presence of a transitional stage from elastic to plastic deformation indicates a weakly stable state of the material. When stresses are reached above the elastic limit during the transition to the stage of plastic deformation, small foci of deformation merge into larger areas in the patterns of distributions of longitudinal relative deformations on the sample surface. The transition from one stage to another occurs through a weakly stable state of the system and is manifested, inter alia, in a change in the distribution of deformation fields on the surface of the sample under tension.
Keywords
aluminum,
deformation,
weakly stable states,
evolution of deformation fieldsAuthors
| Klopotov A.A. | Tomsk State University of Architecture and Building | klopotovaa@tsuab.ru |
| Potekaev A.I. | National Research Tomsk State University | potekaev@spti.tsu.ru |
| Ustinov A.M. | Tomsk State University of Architecture and Building | artemustinov@bk.ru |
| Ivanov Yu.F. | Institute of High Current Electronics SB RAS | yufi55@mail.ru |
| Abzaev Yu.A. | Tomsk State University of Architecture and Building | abzaev2010@yandex.ru |
| Kulagina V.V. | Siberian State Medical University | kulagina.vv@mail.ru |
Всего: 6
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