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| Numéro |
J. Phys. IV France
Volume 11, Numéro PR8, Novembre 2001
Fifth European Symposium on Martensitic Transformations and Shape Memory Alloys
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| Page(s) | Pr8-235 - Pr8-240 | |
| DOI | https://doi.org/10.1051/jp4:2001840 | |
Fifth European Symposium on Martensitic Transformations and Shape Memory Alloys
J. Phys. IV France 11 (2001) Pr8-235-Pr8-240
DOI: 10.1051/jp4:2001840
1 Institut für Werkstoffe, IA 1/125, Ruhr-Universität Bochum, 44780 Bochum, Germany
2 Department of Metal Physics, Charles University, Ke Karlovu 5, 12116 Prague, Czech Republic
© EDP Sciences 2001
J. Phys. IV France 11 (2001) Pr8-235-Pr8-240
DOI: 10.1051/jp4:2001840
On the role of martensite in the formation of microstructures in heat resistant 9 to 12% chromium steels
A. Dronhofer1, J. Pesicka2 and G. Eggeler11 Institut für Werkstoffe, IA 1/125, Ruhr-Universität Bochum, 44780 Bochum, Germany
2 Department of Metal Physics, Charles University, Ke Karlovu 5, 12116 Prague, Czech Republic
Abstract
The present work uses transmission electron microscopy to study the formation of the microstructure of a 12% chromium tempered martensite ferritic steel. The main emphasis placed on the difference between a martensitic material state and the tempered material state. Tempering results in a decrease of dislocation density and in an increase of the width of elongated ferritic micro grains (as opposed to martensitic laths). Adjacent micro grains in the tempered material state are separated by high and low angle boundaries. High angle boundaries are of {110}- type.
© EDP Sciences 2001