Structural Transformations in Copper during High-Speed Deformation upon the Convergence of a Massive Cylindrical Shell under Implosion
| Autor: | I. V. Khomskaya, A. E. Kheifets, N. Yu. Frolova, E. V. Shorokhov, V. I. Zel’dovich |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Bent molecular geometry Shell (structure) Implosion Geometry Deformation (meteorology) Condensed Matter Physics 01 natural sciences Matrix (mathematics) Orientation (geometry) 0103 physical sciences Materials Chemistry Cylinder 010306 general physics Crystal twinning |
| Zdroj: | Physics of Metals and Metallography. 121:446-451 |
| ISSN: | 1555-6190 0031-918X |
| Popis: | The deformation structure in copper that forms upon the convergence of a massive cylindrical shell into a cylinder is studied in this work. The shell in the deformation zone was subjected to high-speed deformation (~104 1/s) with large values of true strain (e varied from 0.8 to 2.0). It is shown that two types of structures were formed under deformation: regions containing disperse grains with high-angle boundaries and twins and regions with deformation cells having low-angle boundaries. It is found that the twins that arose at the early stages of deformation are distorted upon further deformation: their rectilinear boundaries are bent, the orientation relationships with the matrix are violated, and high-angle boundaries of arbitrary orientation are formed. |
| Databáze: | OpenAIRE |
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