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The effect of iron additions on the microstructure and properties of the “Tribaloy” Co-Mo-Cr-Si wear resistant alloys

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Abstract

The effect of iron additions in the range 5 to 15 wt % iron inclusive on the microstructure and properties of two Co-Mn-Cr-Si wear resistant alloys (“Tribaloys” T400 and T800) has been investigated. Iron additions were found to stabilize the f c c form of the cobalt solid solution, to give a fully eutectic matrix and to decrease the volume fraction of the primary Laves phase. These microstructural modifications have little effect on the plane strain fracture toughness but result in a significant increase in the modulus of rupture. The addition of iron induces only minor changes in the corrosion and oxidation resistance of T800, whereas the performance of T400 deteriorates.

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Author notes

  1. Alison Halstead

    Present address: Department of Materials Technology, Brunel University, Kingston Lane, Uxbridge, Middlesex, UK

Authors and Affiliations

  1. Department of Metallurgy and Materials Science, Imperial College, SW7 2BP, London, UK

    Alison Halstead & Rees D. Rawlings

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  1. Alison Halstead
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  2. Rees D. Rawlings
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Halstead, A., Rawlings, R.D. The effect of iron additions on the microstructure and properties of the “Tribaloy” Co-Mo-Cr-Si wear resistant alloys. J Mater Sci 20, 1693–1704 (1985). https://doi.org/10.1007/BF00555273

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  • DOI: https://doi.org/10.1007/BF00555273

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