Abstract
The problems of constructing mathematical models of physicochemical and heat and mass transfer processes are discussed when using heterogeneous materials in an additive laser technologies that form chemical compounds under certain conditions. The results of calculations of thermocapillary convection induced by a laser in aluminum melt with admixture particles of a higher refractory nickel are presented, when the beam is scanned at a constant speed. A description of exothermic reactions in nickel particles added to the melt during laser cladding or alloying is proposed, which allows calculating the composition of intermetallic phases in the trace of the beam after cooling.
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