The Application of Electron Channeling Contrast Mode to Study the Recrystallization Process in Nickel Alloy after Different Thermomechanical Processing Conditions
Abstract
This paper describes the effect of different thermomechanical processing (TMP) conditions on the evolution of the recrystallized structure of NiMoCr alloy. The hot working conditions and various heat treatment parameters were employed in order to influence the recrystallization process of the alloy. The changes in microstructure resulting from tested programs were investigated by a scanning electron microscope in electron channeling contrast mode. By applying this method, it was possible to detect and evaluate the difference between deformed and recrystallized grains in the microstructures. The results showed that the uniformity and the percentage amount of recrystallized area increases when a longer annealing time and/or higher amount of deformation during TMP were employed.
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