Akademik Məlumat İdarəetmə Sistemi
in: Intermetallics and Superalloys, Morris D. G.,Naka S and Caron P., Editor, John Wiley & Sons, West Sussex, UK , New York, pp.228-233, 2000
As part of an investigation into potential Al matrix laminated composite materials, studies have been made on the development of Fe-Al based reinforcement materials that could be preformed into the desired final shape prior to forming the intermetallic phase for the production of tightly bonded metal-intermetallic layered composite.
Laminates were produced by melt suction process, which allows rapid solidification against a chill wall while minimizing convection, to ensure the refined, rapidly solidified microstructure in order to improve their mechanical properties. The effects of ternary alloying additions on the ordering characteristics and solidification structures were examined. The microstructural observation and structural analysis performed on the specimens alloyed with Mn suggested that phase decomposition occurs during rapid solidification processing which leads to the formation of k phase carbides distributed within disordered austenite matrix. Lattice parameter of austenitic Fe-Al-Mn alloys is a function of the composition and lattice parameter of the austenite phase increases with increasing amount of alloying addition.
Preliminary experiments directed towards
the characteristics of interfacial reactions
were performed by the solid state diffusion bonding at two different
temperatures. It was observed that bonding takes place, however, a
discontinuous diffusion layer is formed at the interface.