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
Rok vydání: 2020
Předmět:
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