Abstract
Detailed studies on the effects of pulsed laser interference heating on surface characteristics and subsurface microstructure of amorphous
Fe80Si11B9 alloy are reported. Laser interference heating, with relatively low pulsed laser energy (90 and 120 mJ), but with a variable number
(from 50-500) of consecutive laser pulses permitted to get energy accumulation in heated areas. Such treatment allowed to form two-
Dimensional micro-islands of laser-affected material periodically distributed in amorphous matrix. The crystallization process of amorphous
FeSiB ribbons was studied by means of scanning and transmission electron microscopy. Detailed microstructural examination showed that
the use of laser beam, resulted in development of nanostructure in the heated areas of the amorphous ribbon. The generation of nanocrystalline
seed islands created by pulsed laser interference was observed. This key result may evidently give new knowledge concerning the differences
in microstructure formed during the conventional and lased induced crystallization the amorphous alloys. Further experiments are needed to
clarify the effect of pulsed laser interference crystallization on magnetic properties of these alloys.
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