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Comparative Study of Microstructure and Mechanical Properties of Two TiAl-Based Alloys Reinforced with Carbide Particles
Article

The Effect of Simultaneous Si and Ti/Mo Alloying on High-Temperature Strength of Fe3Al-Based Iron Aluminides

1
Department of Material Science, Faculty of Mechanical Engineering, Technical University of Liberec, 461 17 Liberec, Czech Republic
2
Department of Technology, Faculty of Mechanical Engineering, Technical University of Liberec, 461 17 Liberec, Czech Republic
3
Department of Metals and Corrosion Engineering, University of Chemistry and Technology, 166 28 Prague, Czech Republic
4
Department of Foundry Engineering, Brno University of Technology, 601 90 Brno, Czech Republic
*
Author to whom correspondence should be addressed.
Academic Editor: Grzegorz D. Sulka
Molecules 2020, 25(18), 4268; https://doi.org/10.3390/molecules25184268
Received: 3 August 2020 / Revised: 11 September 2020 / Accepted: 14 September 2020 / Published: 17 September 2020
(This article belongs to the Special Issue Intermetallics: Synthesis, Structure, Function)
The effect of phase composition and morphology on high-temperature strength in the compression of Fe-Al-Si-based iron aluminides manufactured by casting was investigated. The structure and high-temperature strength in the compression of three alloys—Fe28Al5Si, Fe28Al5Si2Mo, and Fe28Al5Si2Ti—were studied. Long-term (at 800 °C for 100 h) annealing was performed for the achievement of structural stability. The phase composition and grain size of alloys were primarily described by means of scanning electron microscopy equipped with energy dispersive analysis and Electron Backscatter Diffraction (EBSD). The phase composition was verified by X-ray diffraction (XRD) analysis. The effect of Mo and Ti addition as well as the effect of long-term annealing on high-temperature yield stress in compression were investigated. Both additives—Mo and Ti—affected the yield stress values positively. Long-term annealing of Fe28Al5Si-X iron aluminide alloyed with Mo and Ti deteriorates yield stress values slightly due to grain coarsening. View Full-Text
Keywords: Fe-Al-Si cast alloys; Ti and Mo alloying; long-term annealing; microstructure; high-temperature strength in compression Fe-Al-Si cast alloys; Ti and Mo alloying; long-term annealing; microstructure; high-temperature strength in compression
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MDPI and ACS Style

Vodičková, V.; Švec, M.; Hanus, P.; Novák, P.; Záděra, A.; Keller, V.; Prokopčáková, P.P. The Effect of Simultaneous Si and Ti/Mo Alloying on High-Temperature Strength of Fe3Al-Based Iron Aluminides. Molecules 2020, 25, 4268. https://doi.org/10.3390/molecules25184268

AMA Style

Vodičková V, Švec M, Hanus P, Novák P, Záděra A, Keller V, Prokopčáková PP. The Effect of Simultaneous Si and Ti/Mo Alloying on High-Temperature Strength of Fe3Al-Based Iron Aluminides. Molecules. 2020; 25(18):4268. https://doi.org/10.3390/molecules25184268

Chicago/Turabian Style

Vodičková, Věra, Martin Švec, Pavel Hanus, Pavel Novák, Antonín Záděra, Vojtěch Keller, and Petra P. Prokopčáková. 2020. "The Effect of Simultaneous Si and Ti/Mo Alloying on High-Temperature Strength of Fe3Al-Based Iron Aluminides" Molecules 25, no. 18: 4268. https://doi.org/10.3390/molecules25184268

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