Intermetallic alloys with ceramic particles and technological concept for high loaded materials

摘要

The paper presents a material and technological concept of the fabrication of a composite of a laminated structure. The material of the composite's individual layers are mtermetallic phases from the Fe-Al or Fe-Ti-Al-Al_2O_3 systems. The produced aluminium strips with a core in the form of metallic powders or priory synthesized intermetailic phases are formed as packets. The packets of a predefined complex chemical composition are placed in moulds and subjected to pressing. The composite material is obtained in a self-propagating high temperature synthesis combined with sintering under pressure. By means of rolling, aluminium strips with iron dust were fabricated, after which they were subjected to heat treatment. The hjgh temperature synthesis was earned out in order to obtain composite powders and sinters: Fe-Al, FeAl-TiAl-Al_2O_3 and FeAl-TiC-Al_2O_3. Structural and X-ray analyses have corroborated the phase composition and fine dispersed structure of the composite materials. The results obtained in the laboratory research allow the selection of equipment for the production of composite plates.