Iron-aluminium-base alloys with strengthening laves phase for structural applications at high temperatures

D. D. Risanti*, G. Sauthoff

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

15 Citations (Scopus)


Fe-Al-Ta alloys with the ternary Laves phase Ta(Fe0.5+x, Al 0.5-x)2 are studied experimentally with the objective of clarifying the effect of Laves phase precipitation and atomic ordering on the deformation characteristics of such Fe-Al-base alloys. The present study concentrates on the hardening effect of the Laves phase in ordered and disordered Fe-Al-Ta alloys with Al contents between 16 and 45 at.% showing the A2 disorder or the DO3 or B2 order. Ta has a low solubility in Fe-Al alloys which is beneficial for slowing down precipitate coarsening. Small amounts of Laves phase together with atomic ordering increase the yield stress and affect ductility in a complex way. The alloys with 1% Ta exhibit a high oxidation resistance. The continuing work aims at adjusting the Al and Ta content for an optimum relation of high-temperature strength and low-temperature ductility with maintaining a sufficient oxidation resistance.

Original languageEnglish
Pages (from-to)865-868
Number of pages4
JournalMaterials Science Forum
Issue numberI
Publication statusPublished - 2005
Externally publishedYes
EventPRICM 5: The Fifth Pacific Rim International Conference on Advanced Materials and Processing - Beijing, China
Duration: 2 Nov 20045 Nov 2004


  • Fe-Al-Ta alloys
  • Iron aluminides
  • Laves phase


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