Model of static recrystallization in the coarse-grained B2 iron aluminide

0486493 - FZÚ 2018 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Schindler, I. - Šumšal, V. - Kopeček, Jaromír - Kawulok, P. - Jozwik, P. - Rusz, S. - Kawulok, R. - Opěla, P.
Model of static recrystallization in the coarse-grained B2 iron aluminide.
METAL 2014: 23rd International Conference on Metallurgy and Materials, conference proceedings. Ostrava: Tanger Ltd, 2014, s. 218-223. ISBN 978-80-87294-54-3.
[23rd International Conference on Metallurgy and Materials. Brno (CZ), 21.05.2014-23.05.2014]
Grant CEP: GA ČR(CZ) GAP107/10/0438
Institucionální podpora: RVO:68378271
Klíčová slova: iron aluminide * hot compression test * microstructure * EBSD * static recrystallization
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)

Microstructure of the laboratory castings made from Fe-40at.%Al-Zr-B alloy was homogenized by the multipass hot rolling in protective capsules and subsequent lannealing. Based on the isothermal hot compression tests and EBSD analysis, the sufficiently accurate model describing the static recrystalization kinetics of the such prepared coarse-grained B2 iron aluminide after strain 0.2 was developed. The independent variables in this model are temperature of deformation as well as annealing time equal to the deformation temperature. Unexpected effect of the previous strain value on the static softening was observed. Static recrystallization begins relatively easy in the studied alloy in the whole range of testing temperatures (900-1100 °C), but a very long-term annealing is quite necessary for the complete course of recrystallization.

Trvalý link: http://hdl.handle.net/11104/0281294