Changes in the surface structure and properties of zirconium after exposure to a low-energy high-current electron beam
The results of numerical and experimental studies of zirconium irradiated by a low-energy high-current electron beam with an energy density ranging from 2.2 to 5.2 J/cm2 are presented. The dynamics of surface melting is simulated, the thickness and lifetime of the melt, as well as the cooling rates realized in zirconium during pulsed electron beam processing, are determined. The structure and properties of zirconium are experimentally studied, it is shown that as a result of processing, a martensitic α'-phase is formed in the layer quenched from the melt. It has been established that the formation of a martensitic phase leads to an increase in the nanohardness and wear resistance of the surface. The maximum obtained value of the surface layer nanohardness after processing is 2 times higher than the initial value.
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Keywords
low-energy high-current electron beam, zirconium, morphology, nanohardness, wear resistance, roughnessAuthors
| Name | Organization | |
| Pesterev E.A. | Institute of High Current Electronics of the Siberian Branch of the Russian Academy of Sciences; Tomsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences | pesterev.e.a@mail.ru |
| Solovyov A.V. | Tomsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences | andrio1974@gmail.com |
| Yakovlev E.V. | Institute of High Current Electronics of the Siberian Branch of the Russian Academy of Sciences; Tomsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences | yakov_e@mail.ru |
| Markov A.B. | Institute of High Current Electronics of the Siberian Branch of the Russian Academy of Sciences; Tomsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences | almar@lve.hcei.tsc.ru |
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