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Effect of chemical composition on the hot deformation behavior of selected iron aluminides
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SYSNO ASEP 0391098 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Effect of chemical composition on the hot deformation behavior of selected iron aluminides Author(s) Šumšal, V. (CZ)
Schindler, I. (CZ)
Kopeček, Jaromír (FZU-D) RID, ORCID
Šíma, V. (CZ)Source Title METAL 2012 Conference Proceedings. - Ostrava : TANGER Ltd. Ostrava, 2012 - ISBN 978-80-87294-31-4 Pages s. 1299-1304 Number of pages 6 s. Publication form Print - P Action METAL 2012. International Conference on Metallurgy and Materials /21./ Event date 23.05.2012-25.05.2012 VEvent location Brno Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords iron aluminides ; hot compression ; stress-strain curves ; activation energy ; deformation resistance Subject RIV JG - Metallurgy R&D Projects GAP107/10/0438 GA ČR - Czech Science Foundation (CSF) MEB090909 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z10100520 - FZU-D (2005-2011) Annotation The influence of chemical composition on the deformation resistance of iron aluminides was studied by the plastometric tests on three types of Fe – 40 at. % Al based materialsalloys; especially the influence of zirconium and boron, respectively effect of fine TiB2 particles addition was investigated. All materials were prepared using the identical procedure. The samples were pre-heated to a temperature of 1200 °C and then deformed at temperatures from 800 to 1200 °C, the nominal strain rate was 0.05 s-1, 0.4 s-1-1, 4 s-1 and 30 s-1. The relationship describing the maximum deformation resistance of aluminides depending on the temperature-compensated strain rate was derived from obtained data. The values of activation energy and hot deformation resistance of the studied materials were compared and the differences interpreted in terms of physical-metallurgical effects of additives. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2013
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