The development of casting technologies under the influence of electromagnetic field and technologies of hot plastic forming of 7000 series aluminium alloys for special purposes

This project will encompass research and development of a casting process technology under the influence of electromagnetic field, for an Al-alloy selected from AW-7000 series. The research will comprise casting without electromagnetic field and a series of castings under the influence of electromagnetic field, with different operating parameters. Comprehensive mechanical and microstructural characterization will indicate the optimal casting conditions to provide a satisfactory microstructure and mechanical properties and to enable elimination of technological operations such as pressing and machining, and to shorten the homogenization annealing duration. This investigation leads to obtaining high quality and competitive products, with a considerable saving of energy and time. For some parts from the production line of the participating enterprise, which are made of the selected alloy and aimed for forging, the numerical simulation of hot forging process using the software SIMUFACT.FORMING 8.1 will be done. For real forgings made of alloy obtained by conventional casting process and of alloy casted with the influence of electromagnetic field, this numerical modeling will provide a reliable stress-strain analysis of hot forging process in 3D space. Results of these researches will form a new hot processing database of that alloy, for different strain rate ranges. They enable a better approach to forging tools design and raise the process technological level.