Nanoquasicrystalline Al-Fe-Cr-alloy Performed by Quasihydrostatic Compression: Structural Characterization and Mechanical Properies

The present research is aimed at the nanoquasicrystalline Al-Fe-Cr alloy consolidated under conditions of quasihydrostatic compression. Water atomized powder of nominal composition A
₁₉₄
Fe
₃
Cr
₃
and fraction volume of nano-sized quasicrystalline particles of i-phase about 30% has been used in experiments. Prior quasihydrostatic compression the powder was sieved to the size ranged from 40 to 60 μm. Structural stability of consolidated Al-Fe-Cr alloy in response to heat treatment has been examined by precise method of differential scanning calorimetry and X-ray analysis. The results obtained for consolidated Al-Fe-Cr alloy have been specified and compared with those of the feedstock powder. Mechanical parameters of as-receive and heat treated consolidated Al-Fe-Cr alloy have been determined by using indentation technique and discussed by considering specific features of structure. Nanoquasicrystalline Al-Fe-Cr alloy subjected to quasihydrostatic compression showed high strength and sufficient ductility, maintaining them at the unchanged level up to 400 °C.