Abstract
The results of investigations of fracture behavior in coarse-grained and ultrafine-grained aluminum under the action of a nanosecond relativistic high-current electron beam in a SINUS-7 accelerator and under conditions of quasi-static tensile loading are reported. It is shown that for both types of deformation, irrespective of the grain size, the fracture is ductile both in deformation and structural features. Based on the examination of the fracture surface, it is found out that under quasi-static loading decohesion of coarse-grained and ultrafine-grained aluminum occurs through shear, and under spalling condition by rupture. It is shown for both grain structures that the thickness of the separated layer increases with the irradiated specimen thickness.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 12, pp. 32–38, December, 2007.
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Dudarev, E.F., Markov, A.B., Tabachenko, A.N. et al. Spall fracture of coarse-grained and ultrafine-grained aluminum under nanosecond relativistic high-current electron beam. Russ Phys J 50, 1205–1211 (2007). https://doi.org/10.1007/s11182-008-9002-9
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DOI: https://doi.org/10.1007/s11182-008-9002-9