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High ductility of magnesium at different strain rates under pressure
https://doi.org/10.22349/1994-6716-2018-93-1-27-34
Abstract
The influence of the strain rate in the range of 3.3·10-5 to 332 sec-1 on the ductility of pure magnesium under hydrostatic pressure varying since 0.1 to 800 MPa and room temperature (293 K) has been researched. High plasticity of magnesium with small and large deformation speed under pressure was found. At pressure pure magnesium ductility reduces while strain rate increases; reduced plasticity is observed only when strain rate is equal to 0.17 sec-1, and above this rate, on the contrary, the ductility of magnesium increases. It is shown that the pressure at ductile-brittle transition increases from 142.2 to 241.5 MPa with strain rate increasing from 3.3·10-4 up to 332 sec-1.
Keywords
ductility of magnesium,
pressure,
deformation under pressure,
strain rate,
pressure at ductilebrittle transition,
destruction,
magnesium
Supporting agencies: The work was carried out for The Federal Agency for Scientific Organizations (FASO Russia) (“Pressure”, No. AAAA-A18118020190104-3) with partial support of the Ural Branch of the Russian Academy of Sciences (Project No. 18-10-1-40).
About the Authors
R. V. Churbaev
Federal State Budgetary Institution of Science M. Mikheev Institute of Physics of Metals of Ural Branch of the Russian Academy of Sciences
Russian Federation
Russian Federation
Cand. Sc. (Phys.-Math)
18, S. Kovalevskoi St, 620137, Yekaterinburg
V. P. Fedotov
Federal State Budgetary Institution of Science “Institute of Engineering Science of Ural Branch of the Russian Academy of Sciences”
Russian Federation
Russian Federation
Dr Sc. (Eng)
34, Komsomolskaya St., 620049 Yekaterinburg
E. R. Cheremitsyna
Federal State Budgetary Institution of Science “Institute of Engineering Science of Ural Branch of the Russian Academy of Sciences”
Russian Federation
34, Komsomolskaya St., 620049 Yekaterinburg
Russian Federation
34, Komsomolskaya St., 620049 Yekaterinburg
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Review
For citations:
Churbaev R.V., Fedotov V.P., Cheremitsyna E.R. High ductility of magnesium at different strain rates under pressure. Voprosy Materialovedeniya. 2018;(1(93)):27-34. (In Russ.) https://doi.org/10.22349/1994-6716-2018-93-1-27-34
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