Xy. Jiang et al., PRIMARY CRYSTALLIZATION IN AN AMORPHOUS AL88NI4Y8 ALLOY, Philosophical magazine. B. Physics of condensed matter. Statistical mechanics, electronic, optical and magnetic, 76(4), 1997, pp. 419-423
Melt-spun Al88Ni4Y8 ribbons are fully amorphous. Their primary crystal
lization is studied by differential scanning calorimetry, X-ray diffra
ction and transmission electron microscopy. The primary alpha-Al cryst
allites are 5-10 nm in diameter and arise by growth on nuclei, both qu
enched in and generated during annealing. The kinetics of crystallizat
ion can be affected by the quench rate used to form the amorphous phas
e and by low-temperature pre-annealing.