The kinetics of ordering, grain growth and chemical segregation in nonequilibrium iron(3)X alloys (X = aluminum, silicon and germanium)

Experimental studies on the kinetics of microstructural evolution in highly nonequilibrium FeMaterials far from their states of thermodynamic equilibrium were first prepared by rapid quenching and ball milling methods. Heat treatments at relatively low temperatures were used to allow the alloy microstructure to evolve towards equilibrium. Mossbauer spectroscopy was used heavily for measuring short range ordering, but X-ray diffractometry and transmission electron microscopy were also used extensively for microstructural characterization.The initial states of the FeThe kinetics of microstructural evolution, especially grain growth was also studied on nanocrystalline...