FRACTURE BEHAVIOR OF FeAlSi INTERMETALLICS

Jaroslav Čech; Petr Haušild; Miroslav Karlík; Kateřina Nová; Filip Průša; Pavel Novák; Jaromír Kopeček

doi:10.14311/APP.2020.27.0006

Acta Polytechnica CTU Proceedings (Jun 2020)

FRACTURE BEHAVIOR OF FeAlSi INTERMETALLICS

Jaroslav Čech,
Petr Haušild,
Miroslav Karlík,
Kateřina Nová,
Filip Průša,
Pavel Novák,
Jaromír Kopeček

Affiliations

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
Journal volume & issue: Vol. 27, no. 0
pp. 6 – 12

Abstract

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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).

fealsi, fracture toughness, nanoindentation, sps

Published in Acta Polytechnica CTU Proceedings

ISSN: 2336-5382 (Online)
Publisher: CTU Central Library
Country of publisher: Czechia
LCC subjects: Technology: Engineering (General). Civil engineering (General)
Website: https://ojs.cvut.cz/ojs/index.php/APP

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