Application of SPS consolidation and its influence on the properties of the FeAl.sub.20./sub.Si.sub.20./sub. alloys prepared by mechanical alloying

0521280 - FZÚ 2020 RIV CH eng J - Journal Article
Průša, F. - Šesták, J. - Školáková, A. - Novák, P. - Haušild, P. - Karlík, M. - Minařík, P. - Kopeček, Jaromír - Laufek, F.
Application of SPS consolidation and its influence on the properties of the FeAl₂₀Si₂₀ alloys prepared by mechanical alloying.
Materials Science and Engineering A Structural Materials Properties Microstructure and Processing. Roč. 761, Jul (2019), s. 1-12, č. článku 138020. ISSN 0921-5093. E-ISSN 1873-4936
R&D Projects: GA ČR(CZ) GA17-07559S
Institutional support: RVO:68378271
Keywords : electron microscopy * stress/strain measurements * X-ray analysis * intermetallics * nanocrystalline materials * powder methods
OECD category: Materials engineering
Impact factor: 4.652, year: 2019
Method of publishing: Limited access
https://doi.org/10.1016/j.msea.2019.06.030

The FeAl20Si20 alloy was prepared by a combination of short-term mechanical alloying and spark plasma sintering. The processing parameters either of the mechanical alloying or spark plasma sintering were optimized to yield the maximal mechanical properties of the alloy. For the mechanical alloying, two amounts of powders batch (5 g or 20 g) were compared. The spark plasma sintering regimes combined pre-pressing prior heating and vice versa, direct and pulse current flow. The MA + SPS alloys exhibited ultrafine-grained microstructure composed of FeSi, Fe3Si and Fe3Al2Si3 phases (with an average crystallite size of approximately 30 nm) with a presence of randomly distributed Al2O3 particles (with diameters ranging from 5 to 100 nm).

Permanent Link: http://hdl.handle.net/11104/0305915