Nucleation During Recrystallisation in Ti-SULC Steel
| Periodical | Materials Science Forum (Volumes 467 - 470) |
|---|---|
| Main Theme | Recrystallization and Grain Growth |
| Edited by | B. Bacroix, J.H. Driver, R. Le Gall, Cl. Maurice, R. Penelle, H. Réglé and L. Tabourot |
| Pages | 93-98 |
| DOI | 10.4028/www.scientific.net/MSF.467-470.93 |
| Citation | N.C.A. Seaton et al., 2004, Materials Science Forum, 467-470, 93 |
| Online since | October, 2004 |
| Authors | N.C.A. Seaton, David J. Prior |
| Keywords | Electron Backscatter Diffraction (EBSD), In Situ Experiment, Nucleation, Recrystallization, Ti-SULC |
| Price | US$ 28,- |
This work is part of a PhD study which investigates mechanisms of nucleation during recrystallisation in steels. A specially built SEM with EBSD and heating stage allows us to observe static recrystallisation in situ. Changes in samples of Ti-stabilised ultra low carbon steel heated to 550ºC are documented via still images, videos and automated EBSD maps. Recrystallisation begins rapidly but slows down within an hour. A temperature increase to 850ºC forces complete recrystallisation. EBSD mapping shows that the ‘new’ grains appear first on the boundaries of deformed {111} grains and have high angle misorientations with the deformed grains, although the new grains are also of {111} type. {111} type deformed grains are recrystallised first due to their higher stored energy relative to {001} grains. Mapping of a section through the sample along the rolling direction reveals intragranular shear bands. Future work will look at these sites in more detail to determine their role as sites for nucleation.
