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Strengthening on aging molybdenum alloys containing titanium and zirconium carbides

  • Heat Resistant Metals and Alloys
  • Published:
Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    Hardness measurements have been used to investigate the strengthening that occurs on aging at 900–1500°C molybdenum alloys belonging to the systems Mo−Ti−C, Mo−Zr−C, and Mo−Ti−Zr−C, quenched from 2100°C; electron-microscopic analysis has been used to determine the alloys' phase composition in the later stages of aging.

  2. 2.

    On aging quenched alloys for 10–20 h, the molybdenum solution precipitates those phases that should exist in the alloys according to the equilibrium diagrams of the system Mo−Ti−C, Mo−Zr−C, and Mo−Ti−Zr−C.

  3. 3.

    Maximum hardness is attained in the alloys on aging at 1200–1300°C (0.5–0.55 Tmp) for 2–4 h.

  4. 4.

    The carbide ZrC strengthens the alloys investigated to the greatest extent, and the carbides (Ti, Zr)C and TiC strengthen them least. The carbide Mo2C reduces the strengthening effect on aging, and hence its presence in the alloys is undesirable.

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Literature cited

  1. W. Chang, Trans. Am. Inst. Min. Metall. Eng.,218 (1960); Trans. Am. Soc. Metals,56 (1963).

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  5. A. M. Zakharov et al., Izv. Vuzov. Tsevet. Met. No. 4 (1970).

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Authors
  1. A. M. Zakharov
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  2. I. I. Novikov
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  3. V. G. Parshikov
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  4. V. K. Portnoi
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Additional information

Moscow Institute of Steel and Alloys. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 6, pp. 48–50, June, 1971.

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Zakharov, A.M., Novikov, I.I., Parshikov, V.G. et al. Strengthening on aging molybdenum alloys containing titanium and zirconium carbides. Met Sci Heat Treat 13, 494–496 (1971). https://doi.org/10.1007/BF00656949

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  • DOI: https://doi.org/10.1007/BF00656949

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