Abstract
The influence of the strain rate in the range of 3.3·10-5to 332 sec-1on 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 3.3·10-4up to 332 sec-1.
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