Effect of Tungsten on the Temper Brittleness in Steels with 9% Cr
- 44 Downloads
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).
- 1.GOST 4543–71. Rolled Stock from Alloy Structural Steel. Performance Specification. IPK [in Russian], Izd. Standartov, Moscow (1997), 66 p.Google Scholar
- 2.Yu. I. Ustinovshchikov and O. A. Bannykh, The Nature of Temper Brittleness of Steels [in Russian], Nauka, Moscow (1984), 239 p.Google Scholar
- 5.H. K. D. H. Bhadeshia and R. Honeycombe, Steels: Microstructure and Properties, Butterworth-Heinemann, UK (2006), 357 p.Google Scholar
- 6.F. Abe, T. U. Kern, and R. Viswanathan, Creep Resistant Steels, Woodhead Publ. in Materials (2008), 678 p.Google Scholar
- 8.A. Yu. Kipelova, A. N. Belyakov, V. N. Skorobogatykh, et al., “Structural changes under tempering in steel 10Kh9K3V1M1FBR and their effect on mechanical properties,” Metalloved. Term. Obrab. Met., No. 3, 14 – 25 (2010).Google Scholar
- 9.K. A. Lanskaya, High-Chromium Refractory Steels [in Russian], Metallurgiya, Moscow (1976), 216 p.Google Scholar
- 10.GOST 5632–72. High-Alloy Steels and Corrosion-Resistant, High-Temperature and Refractory Alloys. Grades. IPK [in Russian], Izd. Standartov, Moscow (1997), 60 p.Google Scholar
- 12.Yu. I. Ustinovshchikov, “Causes of appearance of brittleness in the process of high tempering of chromium steels,” Fiz. Met. Metalloved., 44, 144 – 151 (1977).Google Scholar
- 13.M. A. Smirnov and V. I. Filatov, “High-temperature thermomechanical treatment of alloy structural and tool steels,” Metal. Sci. Heat Treat., 56(9 – 10), 470 – 476 (2015).Google Scholar