Role of powder precursors in production of composite alloys using liquid-phase methods

Resumo

Process capabilities of self-propagating high-temperature synthesis (SHS) in the production of aluminum-based composite alloys for the fabrication of shaped wares are shown. Thermodynamic calculations of reactions between initial components are performed and the scheme of their interaction is proposed. The influence of various methods of preparation of powder precursors on the reaction interaction intensity is established. The comparative data on casting properties of composite alloys fabricated with the application of the SHS process are presented. The fabrication technology of castings of such materials is developed and the results of their pilot testing are presented.