Studies on the Magnesium Alloys Cladding in the Plastic Forming Processes (Die Forging and Extrusion) Uƒsing as the Clad L„ayer Corrosion Resistant Aluminum Alloys

摘要

The studies was conducted in order to improve thecorrosion properties of magnesium alloys by forming on thesurface a thin layer of aluminum alloy. As the feedstock materialMgAlZn alloy (AZ series) have been used. Cladding process wasrealized in direct and indirect extrusion process. As feedstock toextrusion process billets with sleeve pipe (cladding material)pressed on them were used. The resulting claded rods have beenused for forging process trials, which allowed to determine theirsusceptibility to further plastic forming. After forging micro-andmacrostructure of samples were tested, paying particular attentionto the welding zone of both materials (claded alloy and cladlayer). In the final stage of work forgings used in trials in saltspray chamber which allowed to verify the corrosion properties oftechnology being developed.