Conclusion
For steels of the type studied, in which there is no discrete transition to the brittle condition after thermal improvement, the work of crack propagation can be determined with satisfactory precision by A. P. Gulyaev's method.
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Additional information
All-Union Scientific-Research Institute of Railroad Transportation. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 6, pp. 46–49, June, 1970.
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Kosarev, L.N. Comparison of the work of crack propagation determined by the Gulyaev and Drozdovskii methods. Met Sci Heat Treat 12, 492–495 (1970). https://doi.org/10.1007/BF00668859
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DOI: https://doi.org/10.1007/BF00668859