Structural change of the melt spun Al-10Ni-5Y by the addition of 1%Sr

New amorphous alloy design was undertaken by an addition of Sr to a partial ly amorphous Al-10Ni-5Y alloy by rapid solidification process. Following on e of the empirical rules for glass formation, only 1%Sr addition dramatical ly changed the nanocrystalline structure of the matrix alloy to Sr rich cel l structure embedded in amorphous matrix. Sr additions increased the glass forming ability and thermal stability including the first crystallization r eaction temperature and activation energy. The effect of Sr additions to Al -10Ni-5Y on the glass forming ability (GFA) and the kinetics for crystalliz ation was investigated and compared with nanocrystalline Al-10Ni-5Y and ful ly amorphous Al-5Ni-10Y alloy ribbon. (C) 2001 Elsevier Science B.V. All ri ghts reserved.