Structure and mechanical properties of foils made of nanocrystalline beryllium
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- 作者：O. M. Zhigalina ; A. A. Semenov ; A. V. Zabrodin ; D. N. Khmelenin…
- 刊名：Crystallography Reports
- 出版年：2016
- 出版时间：July 2016
- 年：2016
- 卷：61
- 期：4
- 页码：549-557
- 全文大小：1,260 KB
- 刊物类别：Physics and Astronomy
- 刊物主题：Physics
Crystallography
Russian Library of Science - 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
- ISSN：1562-689X
- 卷排序：61
文摘
The phase composition and structural features of (45–90)-μm-thick foils obtained from nanocrystalline beryllium during multistep thermomechanical treatment have been established using electron microscopy, electron diffraction, electron backscattering diffraction, and energy-dispersive analysis. This treatment is shown to lead to the formation of a structure with micrometer- and submicrometer-sized grains. The minimum average size of beryllium grains is 352 nm. The inclusions of beryllium oxide (ВеО) of different modifications with tetragonal (sp. gr. P42/mnm) and hexagonal (sp. gr. P63/mmc) lattices are partly ground during deformation to a size smaller than 100 nm and are located along beryllium grain boundaries in their volume, significantly hindering migration during treatment. The revealed structural features of foils with submicrometer-sized crystallites provide the thermal stability of their structural state. Beryllium with this structure is a promising material for X-ray instrument engineering and for the production of ultrathin (less than 10 μm) vacuum-dense foils with very high physicomechanical characteristics.Original Russian Text © O.M. Zhigalina, A.A. Semenov, A.V. Zabrodin, D.N. Khmelenin, D.A. Brylev, A.V. Lizunov, A.L. Nebera, I.A. Morozov, A.S. Anikin, A.S. Orekhov, A.N. Kuskova, V.V. Mishin, A.V. Seryogin, 2016, published in Kristallografiya, 2016, Vol. 61, No. 4, pp. 526–534.