Heating process in the domain of thin metal film subjected to a strong laser pulse are discussed. The mathematical model of the process
considered is based on the dual-phase-lag equation (DPLE) which results from the generalized form of the Fourier law. This approach is,
first of all, used in the case of micro-scale heat transfer problems (the extremely short duration, extreme temperature gradients and very
small geometrical dimensions of the domain considered). The external heating (a laser action) is substituted by the introduction of internal
heat source to the DPLE. To model the melting process in domain of pure metal (chromium) the approach basing on the artificial mushy
zone introduction is used and the main goal of investigation is the verification of influence of the artificial mushy zone ‘width’ on the
results of melting modeling. At the stage of numerical modeling the author’s version of the Control Volume Method is used. In the final
part of the paper the examples of computations and conclusions are presented.