MICROSTRUCTURAL FEATURES OF RSAl BASED THERMAL STRENGTHENED ALLOYS
(Department of Materials Science; Northeastern University; Shenyang 110006)
Abstract: To develop high temperature aluminium alloys for commercial and military aircraft, the as quenched microstructural features of rapidly solidified Al Fe V Si alloys were examined with XRD, TEM and Mssbauer spectroscopy. The results show that the microstructure of the alloy consists of microcellular α Al and nearly spherical α Al 13 (Fe, V) 3Si nanoscale particles. There are three kinds of Fe atomic configurations in as quenched state. The values of matrix lattice parameter decreases with the increasing of Fe solution concentration. The structure of α Al 13 (Fe, V) 3 Si particles is bcc and its a 0 is of 1.260 nm.
Key words: Al Fe V Si alloys dispersive particles atomic configuration lattice parameter