Conclusions
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1.
Electron microscopic analysis revealed a number of characteristics of the fracture of high-manganese steel. Three types of fracture were observed in these steels — ductile transcrystalline fracture in the form of flat surfaces, and transcrystalline fracture in the form of undulating topography (intermediate between ductile and brittle).
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2.
Electron microscopic analysis makes it possible to determine the ductile-brittle transition temperature of cast and wrought steel G13. The ductile-brittle temperature was taken as the temperature where the fracture contains 50% dimples.
The ductile-brittle transition temperature increases with the phosphorus content of the steel.
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Literature cited
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Additional information
Central Scientific-Research Institute of Ferrous Metallurgy. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 4, pp. 49–54, April, 1974.
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Gulyaev, A.P., Chulkova, V.M. Fracture of high-manganese austenitic steels. Met Sci Heat Treat 16, 332–336 (1974). https://doi.org/10.1007/BF00679229
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DOI: https://doi.org/10.1007/BF00679229