Fractality of Fractures of Aluminum and Titanium Alloys Irradiated by Intensive Electron Beam
| Authors | V.F. Klepikov1 , V.V. Lytvynenko1 , Yu.F. Lonin2 , A.G. Ponomarev2 , O.A. Startsev1 , V.T. Uvarov2 |
| Affiliations | 1 Institute of Electrophysics and Radiation Technologies, NAS of Ukraine, 28, Chernyshevsky st., PO 8812, 61002 Kharkiv, Ukraine 2 NSC Kharkiv Institute of Physics and Technology, NAS of Ukraine, 1, Akademichna st., 61108 Kharkiv, Ukraine |
| Е-mail | vvlytvynenko@ukr.net, startsev-alex@ukr.net |
| Issue | Volume 8, Year 2016, Number 3 |
| Dates | Received 04 May 2016; published online 03 October 2016 |
| Citation | V.F. Klepikov, V.V. Lytvynenko, Yu.F. Lonin, et al., J. Nano- Electron. Phys. 8 No 3, 03009 (2016) |
| DOI | 10.21272/jnep.8(3).03009 |
| PACS Number(s) | 61.80.Fe, 81.40.Wx |
| Keywords | Fractal dimension, Electron beam (3) , Aluminum, Titanium (10) , Ablation (2) . |
| Annotation | The aluminum and titanium plates were irradiated by the high-current electron beam with the electron energy around 0.35 MeV, impulse duration of 5 µs, beam current of 2 kA, and with the incident energy density up to 3.5 MJ/m2. The cross-fractures were made in the modified and non-irradiated areas. The fracture surfaces were examined using a SEM JEOL JSM-840. The irradiation resulted in significant changes of the microstructure parameters (i.e. grain size, damage character). The fractal dimension of the grayscale SEM images of the fracture surfaces were statistically analyzed using the arithmetic, geometric and divisor step methods with the sliding square window of varying size. The calculated distributions of fractal dimensions helped to characterize the scaling behavior of the microstructures, which accompany a shift of the fracture mechanism into preferably brittle mode. |
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