Plastic deformation after quenching and low-temperature tempering increases the ultimate tensile strength of steel 28Kh3SNMVFA, with retention of satisfactory ductility and fracture toughness.
Low-temperature tempering after deformation leads to an additional increase in strength. This effect increases with the degree of deformation.
The best combination of properties is obtained by quenching, tempering at 200°, 20% deformation, and tempering at 200°.
The high strength of strain martensite is retained with tempering up to 500–550°.
The strength of the deformed steel after brief tests at elevated temperatures (up to 500°) is higher than that of the quenched steel.
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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 9, pp. 26–29, September, 1978.
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Vasil'eva, A.G., Komissarova, L.A. & Goryushin, V.V. Resistance of strain-hardened martensite to tempering. Met Sci Heat Treat 20, 718–721 (1978). https://doi.org/10.1007/BF00703750
- Tensile Strength
- Plastic Deformation
- Elevated Temperature