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Change in the structure of overheated sections of welded joints during aging of steel 15Kh1M1F

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Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    During isothermal aging (500–700°C) of steel 15Kh1M1F there is intensive precipitation hardening in overheated sections of the weldment due to the precipitation of dispersed carbides in the matrix with a high dislocation density.

  2. 2.

    The kinetics of aging and subsequent softening depend on the combined effects of the precipitation of dispersed carbides, coalescence, and the development of recovery and recrystallization. The higher the aging temperature, the more rapidly the highest hardness is attained and the lower its absolute value.

  3. 3.

    A stable substructure of acicular ferrite is formed under the conditions of isothermal aging investigated.

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Literature cited

  1. V. N. Zemzin and R. Z. Shron, "Local failure of joints in heat resistant Cr−Mo−V steels at high temperatures," Avtomaticheskaya Svarka No. 6 (1968).

  2. V. N. Zemzin and R. Z. Shron, Increasing the Resistance of Welded Joints in Cr−Mo−V Steels to Brittle (Local) Fracture in the Heat-Affected Zone [inRussian], Informatsionnyi Material, TsKTI, Leningrad (1968).

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  3. M. Bush and P. Kelly, Acta Met.,19, No. 12, 1363–1371 (1971).

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  4. É. R. Kuteliya and L. M. Utevskii, "Direct electron microscopic observation of the bainitic transformation," Metal. i Term. Obrabotka Metal. No. 6 (1969).

  5. V. M. Rozenberg, Creep of Metals [in Russian], Metallurgiya, Moscow (1967).

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  6. M. Kh. Shorshorov, Metal Science of Welding Steels and Titanium Alloys [in Russian], Nauka, Moscow (1965).

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Authors
  1. R. Z. Shron
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  2. I. I. Mints
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  3. N. I. Nikanorova
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  4. Z. I. Nenasheva
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Additional information

Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 9, pp. 65–67, September, 1973.

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Shron, R.Z., Mints, I.I., Nikanorova, N.I. et al. Change in the structure of overheated sections of welded joints during aging of steel 15Kh1M1F. Met Sci Heat Treat 15, 800–802 (1973). https://doi.org/10.1007/BF00656298

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  • DOI: https://doi.org/10.1007/BF00656298

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