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Influence of the temperature and the strain rate on the ductility of the alloy KhN62BMKTYu

  • Heat-Resistant Steels and Alloys
  • Published:
Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    Increasing the strain rate from 6 to 4000 mm/min improves the strength characteristics of alloy KhN62BMKTYu at all test temperatures between 950 and 1150°C. Increasing the strain rate to more than 4000 mm/min barely changes the strength of the alloy.

  2. 2.

    The maximal ductility of the deformed alloy KhN62BMKTYu corresponds to the temperature of dynamic recrystallization.

  3. 3.

    Deformation of the alloy under temperature-strain-rate conditions (t=1150°C, v=6 mm/min) ensuring dynamic polygonization predetermines its high technological ductility.

  4. 4.

    Specimens with structure type necklace have practically the same ductility as those with fully recrystallized structure.

  5. 5.

    The temperature-strain-rate conditions t=1150°C, v=5000 mm/min are critical for alloy KhN62BMKTYu. Under these conditions the alloy fails without macroplastic deformation and without dynamic recrystallization.

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Literature cited

  1. S. A. Saitykov, Stereometric Metallography [in Russian], Metallurgiya, Moscow (1970), p. 82.

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  2. E. A. Maslenkova, O. V. Abramov, and S. P. Barabanov, "Effect of the hot-strain rate on the structure and properties of alloy KhN62BMKTYu," Metalloved. Term. Obrab. Met., No. 1, 60–62 (1986).

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  3. "Deformation and properties of materials for aircraft and space technology," in: Transactions of the International Conference, Holasworth, 1977 [Russian translation], S. G. Glazunov (ed.), Metallurgiya, Moscow (1982).

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Authors
  1. S. B. Maslenkov
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  2. I. V. Kabanov
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  3. E. A. Maslenkova
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  4. O. V. Abramov
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  5. I. N. Mel'kumov
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Additional information

A. A. Baikov Institute of Metallurgy. Translated from Metallovedenie i Termicheskaya i Obrabotka Metallov, No. 10, pp. 21–23, October, 1991.

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Maslenkov, S.B., Kabanov, I.V., Maslenkova, E.A. et al. Influence of the temperature and the strain rate on the ductility of the alloy KhN62BMKTYu. Met Sci Heat Treat 33, 748–752 (1991). https://doi.org/10.1007/BF00800694

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  • DOI: https://doi.org/10.1007/BF00800694

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