Technological Aspects of Fe-Al-Si Intermetallic Alloy Preparation by Mechanical Alloying
Petr HaušildCzech Technical University in PragueJaroslav ČechCzech Technical University in PragueVeronika KadlecováCzech Technical University in PragueMiroslav Karlı́kCzech Technical University in PragueFilip PrůšaUniversity of Chemistry and Technology PragueKateřina NováUniversity of Chemistry and Technology PraguePavel NovákUniversity of Chemistry and Technology PragueJaromı́r KopečekInstitute of Physics of the ASCR, v. v. i
ABI
Abstract
In this paper, recently developed ternary FeAl20Si20 (wt.%) alloy with promising high-temperature oxidation and wear resistance was prepared by mechanical alloying in a high-energy ball mill. The possibility to speed-up the mechanical alloying process by replacing aluminium (and partly silicon) elemental powder by the pre-alloyed powder (AlSi30) with relatively fine dispersion of Si in the Al-Si eutectic was examined. The microstructure, phase composition and mechanical properties after various time of mechanical alloying were characterized. The effect of using the pre-alloyed powders on kinetics of mechanical alloying is compared with the results obtained on batches prepared from elemental powders.
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