The development of the new technology for manufacturing of multi layer aluminium based materials for heat radiators is the subject of this work. Modern aluminium alloys can be specially processed in a controlled manner to obtain nano(mikro) structures. These ultra fine grained structures play a significant role because they provide a possibility to obtain final product that is characterized by elevated strength properties and, at the same time, good anticorrosion and soldering properties. A detailed understanding of these ultra fined structures using a combination of numerical modelling and experimental analysis is presented in this paper. Particular attention is put on implementation of the microstructure evolution model into the finite element software to simulate Equal Channel Angular Pressing (ECAP) process. Examples of the obtained results are presented and discussed.