COARSENING AND PROPERTIES OF EXTRUDED AL-8FE-4NI-1MO ALLOYS

Characterization of rapidly solidified Al-8Fe-4Ni-1Mo alloy shows that subsequent extrusion generates a non-uniform microstructure which may be attributed to the non-uniform deformation during extrusion. The me chanical properties were found to be closely related to the extrusion ratio. It is believed that the degradation of the microstructure is du e to the severe deformation during processing, and hence a compromise is needed between optimum powder bonding and the lowest extent of defo rmation in the consolidation process.