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An Fe-Cr-Nb pseudobinary eutectic alloy

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Abstract

A study has been made of the microstructure and some high temperature mechanical properties of a unidirectionally solidified, pseudobinary Fe-Cr-Nb eutectic alloy. The alloy consists of 22 volume pct of an intermetallic phase in an iron-chromium solid solution matrix. At all solidification rates investigated the eutectic solidified with a cellular solid/liquid interface. The minor phase adopted a fibrous growth morphology except at cell boundaries where it had a plate-like morphology. The system was found to be resistant to microstructural changes at temperatures of up to 1100°C. Fiber reinforcement however was not observed; the strength of the alloy at elevated temperatures was mainly governed by the properties of the matrix phase.

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Authors and Affiliations

  1. Hammersley Iron Ore, Mt. Tom Price, Australia

    D. Jaffrey

  2. BHP Melbourne Research Laboratories, Australia

    S. Marich (Research Officer)

Authors
  1. D. Jaffrey
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  2. S. Marich
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Formerly Research Officer, BHP Melbourne Research Laboratories, Melbourne, Victoria, Australia

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Jaffrey, D., Marich, S. An Fe-Cr-Nb pseudobinary eutectic alloy. Metall Trans 3, 555–562 (1972). https://doi.org/10.1007/BF02642061

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