Conclusions
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1.
The magnitude of internal stresses in bimetal 22K+Kh18N10T and the character of their distribution depend greatly on the heat treatment, after which the stresses in the cladding layer decrease and may even change in sign.
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2.
The internal stresses tend to decrease with increasing heat treatment temperatures, which makes it possible to reduce the stresses by proper selection of the heat treatment conditions.
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3.
The reason for the growth of fatigue cracks from the joint in repeated static tests is the substantial gradient of internal stresses at the joint between the two components.
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Literature cited
E. P. Pokataev, Yu. P. Trykov, and A. A. Khrapov, “Residual stresses in joints produced by explosive welding“, Svarochnoe Proizvodstvo, No. 9, 10 (1972).
A. S. Gel'man et al., “Fatigue strength of two-layer steel produced by explosive welding“, Svarochnoe Proizvodstvo, No. 10, 4 (1966).
A. D. Chudnovskii et al., “Strength of two-layer steel in repeated static tests“, Svarochnoe Proizvodstvo, No. 6, 41 (1973).
M. M. Kobrin, A. L. Birulya, and L. V. Kudryavtseva, “Method for determining separately the residual and reactive internal stresses in a bimetal“, Zavod. Lab., No. 9, 1131 (1971).
F. Stablein, Kruppsche Monatschefte,12, 593 (1931).
Z. Ruzga, Electrical Strain Gages [Russian translation], Mir, Moscow (1964), p. 276.
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Additional information
Altai Scientific-Research Institute of Technology. of Machine Construction. Central Scientific-Research Institute of Heavy Machine Construction. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 11, pp. 28–32, November, 1975.
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Pervukhin, L.B., Mal'tsev, V.A., Konon, Y.A. et al. Distribution of internal stresses in bimetal steel 22K + steel Kh18N10T obtained by explosive welding. Met Sci Heat Treat 17, 934–937 (1975). https://doi.org/10.1007/BF00679382
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DOI: https://doi.org/10.1007/BF00679382