Evolution of Special Grain Boundaries in Austenitic Steels |
| Journal |
Materials Science Forum (Volume 589) |
| Volume |
Materials Science, Testing and Informatics IV |
| Edited by |
P.J. Szabó, T. Réti, T. Czigány |
| Pages |
19-24 |
| DOI |
10.4028/www.scientific.net/MSF.589.19 |
| Online since |
June, 2008 |
| Authors |
Z. Gaál,
Péter János Szabó,
János Ginsztler
|
| Keywords |
AISI 304, Austenitic Steel, CSL, Electron Backscattered Diffraction (EBSD), Thermo-Mechanical Treatment |
| Abstract |
AISI 304 type austenitic stainless steel samples were subjected to different thermomechanical
treatments in order to investigate the effect of thermo-mechanical treatment on the grain
boundary structure of the material. Electron back scatter diffraction measurements have been carried
out in order to obtain information about the boundaries of the treated specimen. The measurements
showed that achieving the same deformation with the same number of deformation cycles and same
heat treatment temperature, the application of shorter heat treatment holding time was advantageous
in aspect of grain boundary structure comparing to the thermo-mechanical treatments with longer
holding time. The frequency of the special Σ3n type CSL-boundaries excluding coherent twin
boundaries was significantly decreased by increasing the heat treatment holding time of the samples
from the very short heat treatment periods. Extending the holding time further, the frequency of the
special Σ3n type CSL-boundaries excluding coherent twin boundaries increased and reached the
results applying the shorter heat treatment periods. |
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