Fe3Al intermetallic network structural materials were prepared by mechanical alloying

annealing and heat treatment

and effects of sintering temperature

temperature increment rate

porosity on compressive strength and fracture toughness of the materials were investigated through observing morphology using SEM （scanning electron microscope）

XRD （X-ray diffraction）

meanwhile

fracture mechanism of the materials were approached also. The results demonstrate that with increasing in sintering temperature

porosity in the Fe3Al intermetallics is gradually densified

and desirable structure and performance can be obtained with sintering at 1420℃

however

it is deteriorated for formation of the materials as a result of evidently collapsed deformation with further increasing in sintering temperature. Mechanical properties of the Fe3Al materials are mainly controlled by porosity rate. Porosity rate can be decreased with a lower sintering temperature-increment rate

which is beneficial for improving compressive strength and fracture toughness of the materials due to generation of frame with compact structure. Based on bridge theory and self-healing mechanism

ways of improving mechanical properties of the materials were described. Through adding Ti element and controlling proper porosity rate

compressive strength and fracture toughness of the materials were improved.