Tolochyna O. Technological principles of creating powder materials based on intermetallic system Fe-Al

The work is devoted to the solution of the actual scientific and technical problem of development of technological processes of production of intermetallide of iron aluminide with use of methods of powder metallurgy. A comprehensive approach to solving the problem of structure formation and formation of mechanical properties in iron powder aluminide is implemented, which consists in sequential analysis and optimization of the composition and structure at each technological stage The synthesis of intermetallic phases from mixtures of iron and aluminum powders during heating is investigated. The process of compaction of the obtained iron aluminide during consolidation by traditional sintering, pulsed hot pressing and hot stamping has been studied. It is shown that the powder materials obtained by the developed technologies are superior to cast analogues, both in high-temperature strength and parameters characterizing the resistance of creep. The technological modes of stamping developed on two-component systems were used to obtain disperse-strengthened composites based on iron aluminides. The developed materials and technological process of their production have passed successful experimental and industrial approbation and are accepted for introduction for production of a spacer of a nozzle of the diesel engine. Key words: Iron, aluminum, intermetallic, mechanical activation, thermal synthesis, sintering, impact sintering, hot forging, annealing, structure, hardness, strength, fracture toughness, creep resistance.