Optimization of laboratory hot rolling of brittle Fe-40at.%Al-Zr-B aluminide

0454901 - FZÚ 2016 RIV PL eng J - Journal Article
Schindler, I. - Hadasik, E. - Kopeček, Jaromír - Kawulok, P. - Fabík, R. - Opěla, P. - Rusz, S. - Kawulok, R. - Jabłońska, M.
Optimization of laboratory hot rolling of brittle Fe-40at.%Al-Zr-B aluminide.
Archives of Metallurgy and Materials. Roč. 60, č. 3 (2015), s. 1693-1701. ISSN 1733-3490. E-ISSN 2300-1909
R&D Projects: GA ČR(CZ) GAP107/10/0438
Institutional support: RVO:68378271
Keywords : iron aluminides * EBSD * textures * modelling
Subject RIV: JG - Metallurgy
Impact factor: 1.090, year: 2014

Use of the protective steel capsules enabled to manage the laboratory hot flat rolling of the extremely brittle as-cast aluminide Fe-40at.%Al-Zr-B with the total height reduction of almost 70 %. The hot rolling parameters were optimized to obtain the best combination of deformation temperature (from 1160°C up to 1240°C) and rolling speed (from 0.14 m·s-1 to 0.53 m·s-1). The resistance against cracking and refinement of the highly heterogeneous cast microstructure were themain criteria. Both experiments and mathematical simulations based on FEM demonstrated that it is not possible to exploitenhanced plasticity of the investigated alloy at low strain rates in the hotrolling process.
Permanent Link: http://hdl.handle.net/11104/0255571