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 partially amorphous Al–10Ni–5Y alloy by rapid solidification process. Following one of the empirical rules for glass formation, only 1%Sr addition dramatically changed the nanocrystalline structure of the matrix alloy to Sr rich cell structure embedded in amorphous matrix. Sr additions increased the glass forming ability and thermal stability including the first crystallization reaction temperature and activation energy. The effect of Sr additions to Al–10Ni–5Y on the glass forming ability (GFA) and the kinetics for crystallization was investigated and compared with nanocrystalline Al–10Ni–5Y and fully amorphous Al–5Ni–10Y alloy ribbon.