The formation of icosahedral phase by mechanical alloying of crystalline el
emental powders has been investigated. The effect of milling energy on icos
ahedral phase formation in Al70Cu20Fe10 has been studied using X-ray diffra
ction and energy dispersive X-ray (EDX) microanalysis. In order to study th
e alloying process during milling, different starting compositions of Al, C
u and Fe elemental blends have been used. The present study indicates that
even though the intermediate phases formed during milling are the same, the
icosahedral phase formation is sensitive to the way in which the nominal c
omposition is reached. (C) 2000 Elsevier Science S.V. All rights reserved.