Twin structures in copper after shock and Shockless high-rate loading
| Autor: | J. Petit, M. I. Tkachenko, V. G. Khanzhin, A. N. Balandina, I. N. Kondrokhina, M. A. Zocher, V. V. Igonin, V. A. Raevskii, O. N. Aprelkov, A. I. Lebedev, A. M. Podurets |
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| Rok vydání: | 2011 |
| Předmět: |
Shock wave
Materials science Strain (chemistry) General Chemical Engineering Metallurgy General Physics and Astronomy Energy Engineering and Power Technology chemistry.chemical_element General Chemistry Strain rate Copper Grain size law.invention Fuel Technology chemistry Optical microscope law Deformation (engineering) Composite material Crystal twinning |
| Zdroj: | Combustion, Explosion, and Shock Waves. 47:606-614 |
| ISSN: | 1573-8345 0010-5082 |
| DOI: | 10.1134/s0010508211050157 |
| Popis: | The structure of copper formed after high-rate loading up to pressures of 20–80 GPa with a strain rate of 105–109 sec−1 is considered. In situations with pressures above 20 GPa and strain rates above 106 sec−1, the deformation twins are grouped into packets, which are seen in an optical microscope as parallel bands of localized strains inside individual grains. The number of bands in the structure increases with increasing grain size and strain rate, with decreasing sample temperature, and with increasing period of sample loading. The characteristic time of formation of twin bands in copper is estimated as 0.3 µsec. |
| Databáze: | OpenAIRE |
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