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FeAl composites with 21,37 and 50 wt pct Fe_3AlC_(0.5) were fabricated by a self-propagating high temperature synthesis(SHS)casting.Phases and microstructures were analyzed by X-ray diffraction(XRD)and scanning electron microscopy(SEM).Microhardness and bending strength of the composites were measured.The composites with 21 and 50 wt pct Fe_3AlC_(0.5) mainly consisted of FeAl and Fe_3AlC_(0.5) phases,whereas the composite with 37 wt pct Fe_3AlC_(0.5) was composed of FeAl,Fe_3AlC_(0.5) and graphite phases.The bonding of the reinforcement and the matrix was good.Hardness and bending strength of the composite with 37 wt pct Fe_3AlC_(0.5) was lower than those of the 21 and 50 wt pct composites owing to the presence of the soft graphite phase.
FeAl composites with 21, 37 and 50 wt pct Fe_3AlC_ (0.5) were fabricated by a self-propagating high temperature synthesis (SHS) casting. Bulk and microstructures were analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Microhardness and bending strength of the composites were measured. The composites with 21 and 50 wt pct Fe_3AlC_ (0.5) mainly consisted of FeAl and Fe_3AlC_ (0.5) phases, while the composite with 37 wt pct Fe_3AlC_ (0.5) was composed of FeAl, Fe_3AlC_ (0.5) and graphite phases. The bonding of the reinforcement and the matrix was good. Hardness and bending strength of the composite with 37 wt pct Fe_3AlC_ (0.5) was lower than those of the 21 and 50 wt pct composites due to the presence of the soft graphite phase.