| The relationship between the dynamic mechanical properties of a fine grained magnesium alloy and its microstructure is investigated. The deformation behavior under dynamic loadings of the fine grained Mg alloy is analyzed and the feature of the dynamically deformed microstructure of the material is discussed. The result shows that the dynamic compressive strength of the fine grained Mg alloy is much higher than the quasi-static compressive strength and it marks a significant strain rate strengthen effect in the material. Few twinning is found in the dynamically deformed microstructure of the fine grained alloy; hence the dominant dynamic plastic deformation mechanism of the fine grained magnesium alloy should be the dislocation slips. |
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