Szczegóły publikacji
Opis bibliograficzny
On the crystallography of plastic flow instabilities in FCC metals during impact loading: a study modelled on copper single crystals / Henryk Paul, Sandra PUCHLERSKA, Izabela Mania // Journal of Physics . Conference Series ; ISSN 1742-6588. — 2025 — vol. 2944 art. no. 012007, s. 1–7. — Bibliogr. s. 7, Abstr. — Publikacja dostępna online od: 2025-02-03. — The 13th Global Conference on Materials Science and Engineering (CMSE 2024) : 17.11.2024 - 20.11.2024 Kampar, Malaysia
Autorzy (3)
- Paul Henryk
- AGHPuchlerska Sandra
- Mania Izabela
Dane bibliometryczne
| ID BaDAP | 158152 |
|---|---|
| Data dodania do BaDAP | 2025-03-14 |
| Tekst źródłowy | URL |
| DOI | 10.1088/1742-6596/2944/1/012007 |
| Rok publikacji | 2025 |
| Typ publikacji | referat w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Journal of Physics, Conference Series |
Abstract
The formation of shear bands (SBs) at high strain rates directly precedes the fracture of metals. Their appearance in the microstructure signals a reduction or complete loss of the load-bearing properties of a metallic parts. This paper analyses the crystallographic aspects of the mechanism responsible for the occurrence of this form of unstable metal flow under model conditions. The study examined Cu single crystals with unstable orientations close to C{112}<111> and S{123}<634>, which were deformed to logarithmic strains of 0.9 in a channel-die, with the punch driven by explosive energy to achieve a strain rate of 4 × 105 s−1. Microstructure and texture evolutions were characterized across a wide range of scales, primarily using scanning and transmission electron microscopy techniques. In both orientations analysed, the extremely high strain rate leads to intense deformation twinning, on all four {111} planes. The appearance of compact twin bundles of two generation, directly precedes the formation of SB. In each of the analysed cases, the rigid-body rotation of the crystal lattice in the band region, along with twinning in the reoriented matrix platelets, increases the density of texture components around the G{110}<001> orientation.
