FRACTURE BEHAVIOR OF FeAlSi INTERMETALLICS

Authors

  • Jaroslav Čech Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering, Department of Materials, Trojanova 13, 120 00 Prague, Czech Republic
  • Petr Haušild Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering, Department of Materials, Trojanova 13, 120 00 Prague, Czech Republic
  • Miroslav Karlík Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering, Department of Materials, Trojanova 13, 120 00 Prague, Czech Republic
  • Kateřina Nová University of Chemistry and Technology Prague, Faculty of Chemical Technology, Department of Metals and Corrosion Engineering, Technická 5, 166 28 Prague, Czech Republic
  • Filip Průša University of Chemistry and Technology Prague, Faculty of Chemical Technology, Department of Metals and Corrosion Engineering, Technická 5, 166 28 Prague, Czech Republic
  • Pavel Novák University of Chemistry and Technology Prague, Faculty of Chemical Technology, Department of Metals and Corrosion Engineering, Technická 5, 166 28 Prague, Czech Republic
  • Jaromír Kopeček Institute of Physics, ASCR, v.v.i., Department of Functional Materials, Na Slovance 2, 182 21 Prague, Czech Republic

DOI:

https://doi.org/10.14311/APP.2020.27.0006

Keywords:

FeAlSi, fracture toughness, nanoindentation, SPS

Abstract

The study is devoted to the intermetallic alloy FeAl20Si20 (wt.%) with the potential applications in high temperature aggressive environments. The samples of the same chemical composition were prepared by spark plasma sintering from the different mechanically alloyed powders (pure elements and pre-alloyed powders). Differences in mechanical properties were characterized. Whereas no significant differences were found in hardness and Young´s modulus, fracture resistance was higher for the samples from pre-alloyed powders in which Palmqvist and lateral cracks were observed (contrary to the sample made of pure elements where only Palmqvist cracks were identified).

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Published

2020-06-11

Issue

Vol. 27 (2020): Proceedings of the 14th International Conference on Local Mechanical Properties - LMP 2019

Section

Articles

How to Cite

FRACTURE BEHAVIOR OF FeAlSi INTERMETALLICS. (2020). Acta Polytechnica CTU Proceedings, 27, 6-12. https://doi.org/10.14311/APP.2020.27.0006