Journal of Materials Science

, Volume 29, Issue 3, pp 742–748

Extrusion processing of FeCo


  • L. Zhao
    • Thayer School of EngineeringDartmouth College
  • I. Baker
    • Thayer School of EngineeringDartmouth College

DOI: 10.1007/BF00445988

Cite this article as:
Zhao, L. & Baker, I. Journal of Materials Science (1994) 29: 742. doi:10.1007/BF00445988


Ingots of three FeCo alloys, Fe-70 at % Co, e-50 at % Co and Fe-30% Co, were successfully extruded at 1000°C, then re-extruded at 750°C in order to produce fine-grained material. The resulting microstructures were examined both optically and by transmission electron microscopy. It was found that increasing the Fe: Co ratio produces less complete recrystallization: Fe-70 at % Co was completely recrystallized even after both the 1000 and 750°C extrusions, whilst Fe-30 at % Co was partially recrstallized after the 1000 °C extrusion. Single dislocations were present in the extruded alloys except single-extruded Fe-30 at % Co, in which dislocation pairs were observed.

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© Chapman & Hall 1994