Conclusions
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1.
Austenite in high-chromium cast irons is stable up to 500°. At higher temperatures the austenite begins to decompose, causing changes in the hardness, wear resistance, and mechanical properties.
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2.
The resistance of high-chromium cast iron to hydroabrasive wear is minimal in the cast condition and in the annealed condition.
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3.
To improve the machinability the alloys should be annealed at 800–900°, which lowers the hardness to HRC 32-35.
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4.
The resistance to hydroabrasive wear is highest after normalization at 1100°.
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Literature cited
T. Dodd and R. Jackson, Metallurgia,176, No. 455 (1967).
W. Stauffer, Schweizer Archiv für Angewandte Wissenschaft und Technik,24, Nos. 7–8 (1958).
Additional information
V. Ya. Chubar' Zaporozh'e Machine Construction Institute. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 1, pp. 64–66, January, 1971.
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Berkun, M.N., Volchok, I.P., Zhivitsa, I.V. et al. Effect of heat treatment on the properties of high-chromium cast iron. Met Sci Heat Treat 13, 69–71 (1971). https://doi.org/10.1007/BF00663785
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DOI: https://doi.org/10.1007/BF00663785