The impact toughness and the structure of high-chromium martensitic steels with different tungsten contents are studied after tempering at 300 – 800°C. It is shown that when the tungsten content is increased from 2 to 3%, the temperature range of the irreversible temper embrittlement is widened and the impact toughness is decreased by a factor of 4.
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The authors are thankful to the Collective Use Center “Diagnostics of Structure and Properties on Nanomaterials” of the Belgorod State National Research University for the afforded facilities for the structural studies and mechanical tests.
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The study has been performed within a grant of the Russian Scientific Foundation (Project No. 14-29-00173).
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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 9, pp. 22 – 26, September, 2017.
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Fedoseeva, A.E., Dudova, N.R. & Kaibyshev, R.O. Effect of Tungsten on the Temper Brittleness in Steels with 9% Cr. Met Sci Heat Treat 59, 564–568 (2018). https://doi.org/10.1007/s11041-018-0190-9
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DOI: https://doi.org/10.1007/s11041-018-0190-9