Metallurgical Transactions A

, Volume 9, Issue 3, pp 397–400 | Cite as

The composition of eta carbide in hastelloy N after aging 10,000 h at 815°C

  • J. M. Leitnaker
  • G. A. Potter
  • D. J. Bradley
  • J. C. Franklin
  • W. R. Laing
Alloy Phases and Structure


The composition of the eta carbide in Hastelloy N containing 0.7 wt pct silicon in the alloy, approaches Mi2C, rather than M6C as indicated in the alloy literature. The silicon content of the eta phase in this case was ~25 at. pct, much higher than has been observed in less highly alloyed material. The data do not permit a definition of the limiting compositions of the phases.


Metallurgical Transaction Silicon Content Analytical Chemistry Group Additional Weight Percentage Alloy Literature 
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Copyright information

© American Society for Metals and the Metallurgical Society of AIME 1978

Authors and Affiliations

  • J. M. Leitnaker
    • 1
  • G. A. Potter
    • 1
  • D. J. Bradley
    • 2
  • J. C. Franklin
    • 3
  • W. R. Laing
    • 4
  1. 1.Oak Ridge National LaboratoryOak Ridge
  2. 2.Chemistry DepartmentMichigan State UniversityUSA
  3. 3.University of CaliforniaBerkeley
  4. 4.Analytical Chemistry DivisionOak Ridge National LaboratoryOak Ridge

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