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T. L. Tsaregradskaya et al.
Fig. 3 The kinetics of
crystallization of alloys of
the Fe–Zr system with an
initial concentration of
zirconium c zr = 10% (at.)
Fig. 4 Concentration
dependence of the
volumetric part of the
crystalline phase in the
Fe–Zr system at a quenching
rate 10 6 K/s
We analyze the peculiarities of the crystallization process of amorphous alloys
under the influence of laser treatment.
Calculation of the characteristics of the crystallization process was calculated for
instant laser pulse, while it was considered that the amorphous tape was heated by a
laser beam to a certain temperature within 10
−6 s.
Figure 5 shows the calculated temperature dependence of the volume fraction of
the crystalline phase under pulsed laser heating.
The high heating rates, achieved by the laser treatment of amorphous alloys,
create a number of differences in the course of crystallization processes compared
with crystallization during slow isothermal annealing. According to the calculations,
impulse heating to temperatures below 550 K does not cause crystallization.