MODELLING OF FORMING PROCESSES OF TWO-COMPONENT Al-Al ALLOY COMPOSITES

This paper analyses two-component material flow during forming processing. It is important to work out a suitable method of analysis of the flow of such materials during forming processing to improve the manufacturing technology of products with required shapes and properties. Physical and numerical simulation of the flow of PM preforms during forging was carried out to obtain qualitative information. The hot forming approach was adopted to obtain high density and required shape of PM composite products. Starting materials were obtained by cold pressing and hot consolidation; these were a layer and coat-core preform of aluminium and Al17Si5Fe3Cu1.1Mg0.6Zr powder. Flow of metal-metal composites during closed-die forging and extrusion is analysed. Starting materials were obtained by cold pressing and hot consolidation; these were a layer and coat-core preform of aluminium and Al17Si5Fe3Cu1.1Mg0.6Zr powder. Simulation of the flow of PM preforms during forming processes using the finite element simulation program LARSTRAN/Shape was carried out to obtain qualitative information. Numerical modelling required setting up procedures for input of initial material and identification of its constituents and their control during the shaping simulation and remeshing. To accomplish this, a workpiece consisting of several different materials was input to the finite element simulation program LARSTRAN/Shape. Results of numerical FEM simulation of the flow of PM preforms during forming processes by closed-die forging and extrusion are comparable to the observed zones of component materials.