'Periodica Polytechnica Budapest University of Technology and Economics'
Abstract
Duplex steels are very interesting stainless steels. Their name originates
from their special austenitic-ferritic structure. This tissue is due to the
high alloying and low carbon content. During heat treatment, several phase
transformation and precipitation processes take place.
Electron back scattering diffraction is a relatively new investigation
method, by which the individual grain orientation can be determined in the
scanning electron microscope. The greatest advantage of this method is its
speed: it is possible to determine a grain orientation even within 0.1 second.
Therefore, in a relatively short time a large amount of data can be
collected, and can be statistically evaluated.
This paper reports a research work, in which SAF-2507 type duplex stainless
steel samples were heat-treated isothermally, and the misorientation between
the austenite and \sigma-phase was calculated
