E-viri
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Ustinov, Artem; Ivanov, Yurii; Klopotov, Anatolii; Petrikova, Elizaveta; Teresov, Anton; Abzaev, Yurii; Potekaev, Alexander; Loskutov, Oleg; Volokitin, Oleg
2020 7th International Congress on Energy Fluxes and Radiation Effects (EFRE), 2020-Sept.-14Conference Proceeding
The paper is devoted to studying the effect of irradiation in the melting mode of a thin (30, 40 μm) surface layer with a high-current intense pulsed electron beam on mechanical properties of technically pure aluminum A7. The deformation curves have been produced by tensile deformation of irradiated and unirradiated flat samples of aluminum A7. The analysis of the occurrence of stages of deformation curves has been carried out based on construction of deformation diagrams in the σ-ε coordinates. The presence of four stages on the deformation curve has been established: the transition stage T and stages III, IV, and V. It has been established that plastic deformation on samples of A7 aluminum irradiated with a high-current pulsed electron beam begins at higher stresses than on unirradiated samples. The occurrence of stages of the plastic flow on deformation curves for aluminum samples irradiated with a high-current electron beam has not changed fundamentally: the same number of stages are observed in the irradiated metal as on unirradiated metal with a somewhat broadened transition stage T. The evolutionary features of the distribution of deformation fields on the surface of the samples at a macroscopic scale have been established during uniaxial tension deformation based on the use of the Vic-3D digital optical system. It has been found that a transition from the transition stage T to stage III is observed when stresses are reached above the elastic limit, which is accompanied by merging of small deformation zones into larger ones in distribution patterns of longitudinal εYY relative deformations on the sample surface.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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