Rapidly solidified Al–12.5 Si–1 Ni ribbons were prepared by
melt spinning. The Si solid solubility was extended to high values as
deduced from X-ray diffraction and TEM. This high solubility of Si was
found to have significant effects on the various properties of this alloy.
High values of electric resistivity was observed which was about four times
the fully annealed values. Furthermore rapid solidification improved the
tensile strength and the toughness of this alloy as compared with its
classically solidified counter part. The relaxation kinetics was followed
by isothermal resistivity measurements. The relaxation follows an equation
which has the Johnson-Mehl-Avrami (JMA) form. No metastable phase was
observed.