The size, shape, and structure of the molten zone appearing on the surface of Fe-C multicomponent alloy upon laser recrystallization
are studied. The laser scan rate varies between 0.01 to 0.167 m/s. A set of equations for the temperature and concentration
fields is derived within a model of locally nonequilibrium crystallization. The use of the hypothesis for marginal stability,
as applied to crystal growth, makes it possible to find the characteristic size of the crystal structure. The mathematical
simulation of recrystallization upon laser processing is in good agreement with experimental data. The results of the simulation
can be used for predicting the mechanical properties in the molten zone as a function of the energy parameters of the radiation
and thermophysical properties of the alloy.
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Translated from Zhurnal Tekhnichesko
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Fiziki, Vol. 72, No. 5, 2002, pp. 48–55.
Original Russian Text Copyright © 2002 by Galenko, Kharanzhevski
$\overset{\lower0.5em\hbox{$\overset{\lower0.5em\hbox{
, Danilov.