Abstract
This paper describes fabrication of an active metal-matrix composite working at elevated temperatures. In order to realize this material, continuous SiC fiber reinforced nickel layer was laminated on unreinforced nickel layer with aluminum insert to reduce hot pressing temperature, pressure and time. Fabrication condition of this material was examined and the most appropriate condition, that is, hot pressing temperature of 993K, pressure of 27Mpa, time of 4.8ks in a low vacuum of 1×(10)^2Pa using 0.1mm thick insert was obtained in the experimental range. There remained an interaction layer of Ni_2Al_3 intermetallic phase around the bonded plane of this material. Curvature of the composite monotonously changes with increasing temperature up to higher than 1200K. Cyclic heating was also performed on the composite by increasing the maximum temperature from 373K up to 1273K by 100K step and it was found that its cuvature change has no hysteresis up to 673K, and has hystereses but is reproducible up to 873k, and is no more reproducible when heated up to 973k and above.
