Recrystallization of beryllium subjected to hydrostatic extrusion
The effective activation energy of primary recrystallization (46±4 kcal/g-atom) and grain growth (51±4 kcal/g-atom) was determined for all degrees of deformation investigated.
The average rate of grain growth at different stages of recrystallization was determined. The increase in the rate of grain growth with increasing degrees of deformation is due to the formation of a larger number of cells with increasing numbers of defects in them.
The recrystallization process occurs at a higher rate in extruded beryllium than in rolled beryllium due to the large accumulated energy and the large number of defects.
KeywordsActivation Energy Recrystallization Average Rate Beryllium Effective Activation
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