Investigation of the effect of simultaneous plastic strain on the recovery and recrystallization behavior of a cold-worked vacuum-melted high purity iron
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This thesis report s an investigation of the effect of simultaneous plastic strain on the recovery and recrystallization behavior of a vacuum melted high purity iron cold-rolled 60% from the as received hot-rolled condition Thyratron-controlled constant-strain-rate motor units were utilized for application of a tensile load to conventional tensile sheet specimens which were heated in constant temperature salt baths. Rockwell-30T hardness measurements and microstructural studies were used as the means of following the progress of recovery and recrystallization of static (conventional) and dynamic (superimposed strain) specimens during annealing . The softening behavior of both static and dynamic anneals were modified by the presence of polygonization which competed with the normally expected recrystallization process. This behavior becomes more pronounced with decrease in temperature and/or increase of simultaneous superimposed strain rate.
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