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Secondary hardness of alloy white irons

  • Cast Irons
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Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    The secondary hardness of chromium white irons is determined by the quantity of residual austenite in the hardened condition and its decomposition in tempering. The optimum austenitizing temperature for the maximum appearance of secondary hardness of chromium white irons is 1100°C, which provides the presence in the hardened specimens of 55–67% residual austenite.

  2. 2.

    The maximum secondary hardness (65–67 HRC) in the widest tempering temperature range (450–550°C) is obtained in irons containing 5–10% Cr and 1–3% Mo.

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Literature cited

  1. M. E. Garber, Castings of White Wear Resistant Irons [in Russian], Mashinostroenie (1972).

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Authors
  1. M. S. Potapova
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  2. I. G. Morozova
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  3. I. Ya. Sokol
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Additional information

Moscow Institute of Steel and Alloys. Moscow Sickle and Hammer Metallurgical Plant. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 7, pp. 18–20, July, 1985.

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Potapova, M.S., Morozova, I.G. & Sokol, I.Y. Secondary hardness of alloy white irons. Met Sci Heat Treat 27, 494–497 (1985). https://doi.org/10.1007/BF00699576

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  • DOI: https://doi.org/10.1007/BF00699576

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