Conclusion
The increased impact-fatigue strength of cast steel in comparison with forged is caused by the character of fatigue crack origin and development in the cast metal. In the cast steel the time of crack origin is longer then in the wrought as the result of relaxation processes and grain refinement occurring in service.
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Tula Planning and Design Technology Institute for Combine Building "Proektin.". Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 4, pp. 10–12, April, 1986.
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Cherkasov, V.E., Yakshin, N.M. & Kavitskii, I.M. The impact-fatigue strength of cast and wrought high-speed steels. Met Sci Heat Treat 28, 240–244 (1986). https://doi.org/10.1007/BF00707646
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DOI: https://doi.org/10.1007/BF00707646