ABSTRACT

Powders consisting of 60 at% Fe and 40 at% Al were mechanically alloyed in a planetary ball mill. The high energy milling process resulted in small powder particles composed of an extended solid solution, Fe(Al). After up to four hours of milling, laminae of different composition were observed which decreased to a size below detection limit in the SEM after heat treatment or further milling. The heat treatment resulted also in a non-stoichiometric ordered FeAl. A decrease in milling ball size resulted in a decrease of the width of the lamellae.