DYNAMICS OF DEFORMATION BEHAVIOR OF AK10M2N ALLOY DURING ELECTRON BEAM TREATMENT

The results of a study of the deformation characteristics of the AK10M2N alloy without treatment and after the application of electron beam treatment are presented. The samples were susceptible to destruction during the stretching process. Quantitative data on the deformation of samples were obtained, deformation engineering and true curves of non-irradiated and irradiated samples were constructed. The dynamics of the average strength and yield strength, relative residual elongation and contraction at rupture, depending on the energy density of the electron beam and the pulse duration of the electron beam, are analyzed. The energy density of the electron beam and the pulse duration ranged from 10 to 50 J/cm² and from 50 to 200 microseconds. The most rational mode of electron beam processing has been identified, leading to an increase in the plastic and strength properties of the AK10M2N alloy. The effect of electron beam processing with an electron beam energy density of 50 J/cm² and an electron beam pulse duration of 200 microseconds on the deformation characteristics of the AK10M2N alloy has been established. The considered mode leads to an increase in the tensile strength (75 %) compared to the strength limit of the cast alloy. It is revealed that the value of the relative residual elongation and contraction at rupture increases after electron beam processing. The analysis of the deformation curves allowed us to identify the stages of deformation. At the second stage of deformation, areas with different angles of inclination (with different coefficients of deformation hardening) were identified. Speckle patterns were obtained in the process of stretching the samples. When studying speckle patterns, it was found that there is an increase in the size of local deformation foci in the central part of non-irradiated samples, which also confirms the effectiveness of electron beam processing.

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