Welded joints of steel 09G2S after holding for 1000 h at elevated temperatures (340–540°C) are prone to hot embrittlement because of the segregation of deleterious admixtures of type (phosphorus) on the ferrite-carbide interfaces, including the boundaries of lamellar cementite particles contained in colonies of pearlite.
The development of hot embrittlement in the metal of the welding seam and in the heat-affected zone of the welded joint of steel 09G2S is accompanied by increased intercrystalline failure in the brittle zones of the fractures of impact test specimens.
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Central Research Institute for the Planning of Steel Structures. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov No. 4, pp. 24–27, April, 1986.
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Goritskii, V.M., Shneiderov, G.R. & Basko, E.M. Proneness to hot embrittlement of welded joints in steel 09G2S. Met Sci Heat Treat 28, 258–261 (1986). https://doi.org/10.1007/BF00707651
- Elevated Temperature
- Test Specimen