Conclusions
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1.
In the original undeformed condition the primary mechanism for dissipation of energy in Cr−Ni−Mo−V and Mn−Ni−Mo pearlite casing steels is magnetomechanical hysteresis.
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2.
Plastic deformation almost completely suppresses magnetomechanical hysteresis and then the primary mechanism for the dissipation of energy is the mechanism of microplastic deformations.
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3.
For the investigated class of steels the composite characteristics of dissipation of energy were determined. These have a correlation relationship with the criteria for determining the tendency of steels toward deformation aging obtained on the basis of the results of mechanical tests.
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4.
A close correlation relationship was obtained only for the characteristics of damping determined without the application of a magnetic field.
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5.
With an increase in tempering time there is a decrease in the tendency of casing steels toward aging and an increase in their tendency toward deformation strengthening.
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6.
With an increase in the ductility of the investigated steels in the original condition there is an increase in the contribution of work hardening to embrittlement in deformation aging.
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Additional information
Central Scientific-Research Institute for Technology and Machinery Manufacture, Moscow, Kiev. Translated from Problemy Prochnosti, No. 10, pp. 94–102, October, 1977.
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Astaf'ev, A.A., Zenin, V.N., Markov, S.I. et al. Effect of strengthening and embrittlement on the dissipation of energy in the deformation-aging of casing steels for atomic plants. Strength Mater 9, 1248–1256 (1977). https://doi.org/10.1007/BF01528919
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DOI: https://doi.org/10.1007/BF01528919