Shock compression of magnesium alloy by ultrashort loads driven by sub-picosecond laser pulses

The shock compression of magnesium (Mg-4Al-2Zn) alloy polycrystalline films on glass under ultrashort loads driven by sub-picosecond laser pulses was investigated. The continuous diagnostics of motion and reflectivity changes of the free rear surface of the samples was carried out in the picosecond...

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Bibliographic Details
Published in:Journal of applied physics 2022-11, Vol.132 (17)
Main Authors: Ashitkov, Sergey, Komarov, Pavel, Romashevskiy, Sergey, Struleva, Evgenia, Evlashin, Stanislav
Format: Article
Language:English
Subjects:
Applied physics
Elastoplasticity
Magnesium base alloys
Shock wave propagation
Strain rate
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Summary:The shock compression of magnesium (Mg-4Al-2Zn) alloy polycrystalline films on glass under ultrashort loads driven by sub-picosecond laser pulses was investigated. The continuous diagnostics of motion and reflectivity changes of the free rear surface of the samples was carried out in the picosecond range (≤200 ps) in a single pulse mode using ultrafast spectral interferometry. We present the data on elastoplastic shock wave evolution at a propagation distance of several hundreds of nanometers, elastic precursor decay, shear, and tensile strengths at the extreme strain rate of ∼109 s−1.
ISSN:0021-8979
1089-7550
DOI:10.1063/5.0082476