Quasi In situ EBSD investigation of static recrystallization in 304L stainless steel at elevated temperature
The microstructural evolution of deformed 304L stainless steel during static recrystallization and grain growth was characterized by EBSD within an SEM chamber, which enabled microstructural and crystallographic information to be determined. The experimental procedures are discussed. The sample was heated at constant temperature for a short time (a few seconds), followed by an intermediate cooling in order to perform scans. This cycle was repeated on the same sample to capture a slowly recrystallizing microstructure. The important aspects in static recrystallization process including nuclei location, nucleation rate and grain growth are all discussed. Special attention is paid on grain boundary migration velocity at high temperature up to 1000°C by investigation of the character of slow and fast moving interfaces.