Abstract
Due to its high stacking fault energy, the recrystallization behavior of molybdenum is strongly dominated by concurrent recovery processes. Therefore, the extent of pre-recovery is believed to influence subsequent recrystallization processes. In the present investigation, this influence was studied by continuous heating experiments of cold-compressed specimens with linear heating rates in the range of 1–1000 K/min to target temperatures in between 800 and 1300 °C. The subsequent microstructural characterization was carried out by electron-channeling-contrast-imaging, hardness tests and electron-back-scatter-diffraction. It was revealed that pre-recovery promoted subsequent recrystallization at lower heating rates (1–100 K/min) which resulted in increased volume fractions of recrystallized grains with decreasing heating rate. In contrast to that, upon rapid heating (1000 K/min), low temperature pre-recovery seemed negligible. Consequently, there was enough stored energy left for rapid recrystallization at higher temperatures. The effect of the heating rate on the recrystallization behavior of molybdenum is discussed.
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