Effect of Tungsten on the Temper Brittleness in Steels with 9% Cr
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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.
Key wordsmartensitic steel impact toughness M23C6 carbides segregations over boundaries
The study has been performed within a grant of the Russian Scientific Foundation (Project No. 14-29-00173).
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