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A study of the high-temperature strength and crack resistance of the metal of the body of stop valve from high-chromium steel 15Kh11MFBL after long-term operation

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Power Technology and Engineering Aims and scope

Abstract

The applicability of the rapid method for determining the ultimate long-term strength, endurance, and crack resistance of cylindrical specimens with three sharp notches, which has been developed by V. I. Gladshtein for pearlitic steels, to chromium steel 15Kh11MFBL is considered. It is shown that the results of evaluation of high-temperature strength by the standard method and with the use of notched specimens supplement each other. Prediction of the time before failure of smooth specimens from notched specimens makes it possible to perform the evaluation for 100,000–300,000 h, which is impossible by direct testing at operating temperatures.

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References

  1. USSR Inventor’s Certificate No. 1422082, V. I. Gladshtein and R. E. Mazel, “A method for predicting the time of long-term strength of materials,” Byul. Otkryt. Izobret., No. 3 (1988).

  2. V. I. Gladshtein, “A method for predicting the long-term strength of steels and alloys with the help of a diagram of variation of denseness due to long-term loading,” Zavod. Lab., 61(4) (1995).

  3. V. I. Gladshtein, “Prediction of long-term strength in creep of heat-resistant steels from the conditions of the final stage of fracture of notched specimens,” Probl. Prochn., No. 11 (1993).

  4. A. S. Zubchenko (ed.), A Reference Book on Grades of Steels and Alloys [in Russian], Mashinostroenie, Moscow (2001).

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Authors and Affiliations

  1. All-Russian Thermal Engineering Institute (VTI), Moscow, Russia

    V. I. Gladshtein & A. V. Pchelintsev

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  1. V. I. Gladshtein
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  2. A. V. Pchelintsev
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Translated from Élektricheskie Stantsii, No. 10, October 2005, pp. 78–80.

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Gladshtein, V.I., Pchelintsev, A.V. A study of the high-temperature strength and crack resistance of the metal of the body of stop valve from high-chromium steel 15Kh11MFBL after long-term operation. Power Technol Eng 39, 352–354 (2005). https://doi.org/10.1007/s10749-006-0008-6

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  • DOI: https://doi.org/10.1007/s10749-006-0008-6

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