The influence of ball milling in a high energy planetary mill on the phase
formation in Al50Ti50-xFex (x = 10, 20, 30, 40 at.%) powder mixtures was st
udied by X-ray diffraction (XRD) and differential scanning calorimetry (DSC
). Mechanical alloying (MA) leads to the formation of single phase nanocrys
talline alloys. Their structures depend on the initial composition of powde
r mixtures: hcp(C14), x = 10; fcc(D8a), x = 20, 30; bcc(B2), x = 40. The MA
alloys preserve their nanocrystalline state in the course of heating up to
500 degrees C. (C) 1998 Elsevier Science S.A. All rights reserved.