Manufacturing Technology 2015, 15(2):238-242 | DOI: 10.21062/ujep/x.2015/a/1213-2489/MT/15/2/238

Preparation of Ultra-Fine Grained Alloys Based on Fe-Al-Si And Ti-Al-Si Intermetallic Compounds by Powder Metallurgy Using the Mechanical Alloying

Jiří Vystrčil, Pavel Novák, Alena Michalcová
University of Chemistry and Technology, Prague, Department of Metals and Corrosion Engineering, Technická 5, 166 28 Prague 6, Czech Republic

Alloys based on the intermetallic phases are presently considered to be very promising materials for demanding technological applications in a wide range of industries. The biggest disadvantage of intermetallics is their low toughness at room temperature. One of the way how to increase their plasticity and eliminate susceptibility to low temperature brittleness is preparing intermetallic phases with ultrafine grain structure. The paper describes the preparation of ultra-fine grained alloys based on intermetallic phases by mechanical alloying and subsequent compaction by the "Spark Plasma Sintering" (SPS). Influence of the individual alloy components on the preparation and mechanical properties of intermetallics alloys were studied. The basic mechanical properties at room and elevated temperatures, resistance to high temperature oxidation and thermal stability of alloys were measured.

Keywords: powder metalurgy, mechanical alloying, intermetallics, ultra-fine grained

Published: April 1, 2015  Show citation

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Vystrčil J, Novák P, Michalcová A. Preparation of Ultra-Fine Grained Alloys Based on Fe-Al-Si And Ti-Al-Si Intermetallic Compounds by Powder Metallurgy Using the Mechanical Alloying. Manufacturing Technology. 2015;15(2):238-242. doi: 10.21062/ujep/x.2015/a/1213-2489/MT/15/2/238.
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