Conclusions
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1.
Discs made of the KhN77TYuR alloy should be annealed for 8h at 750°C. Argon is the best annealing medium; it ensures the required mechanical properties. In the case of blades, annealing in argon or nitrogen increases the fatigue limit, the impact strength, and the relative elongation with respect to blades annealed in air.
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2.
The combined treatment, consisting of electrolytic polishing and annealing in a neutral medium, gave the best results.
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Literature Cited
S. O. Tsobkalo and D. M. Vasil'ev, Zavodskaya laboratoriya No. 2 (1949).
V. I. Romanovskii, Practical Applications of statistics [in Russian], GTTI (1947).
V. A. Parfenov, Teploénergetika, No. 5 (1956).
D. M. Petergerya, “Effect of electrolytic polishing conditions on the resistance of the EI437B alloy to long exposure to high temperatures under stress,” Peredovoi nauchno-tekhnicheskii i proizvodstvennyi opyt, No. 7 (1962).
R. Mandon, “Electrolytic Polishing in Industry Sheet Metal Industries” (1955).
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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 1, pp. 14–19, January, 1964
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Petergerya, D.M., Fridlender, I.G. Effect of annealing and electrolytic polishing and annealing on the mechanical properties of the KhN77TYuR alloy. Met Sci Heat Treat 6, 11–15 (1964). https://doi.org/10.1007/BF00661963
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DOI: https://doi.org/10.1007/BF00661963