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Deformation-plastic behavior of highly irradiated stainless steels 12Kh18N10T and 08Kh16N11M3 at cryogenic and elevated temperatures

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Abstract

In the temperature range from −115 to +120°C, mechanical tests of samples of austenitic stainless steels 12Kh18N10T and 08Kh16N11M3—materials for the casings of spent fuel assemblies of a reactor BN-350 irradiated by neutrons to damaging doses of 11–55 dpa—have been carried out. In the range of cryogenic temperatures, in these highly irradiated steels there was discovered and investigated a new phenomenon—a “wave of plastic deformation,” which consists in the initiation, development, and propagation of a deformation band over the length of the sample, which leads to a possibility of reaching total relative deformation of 20% and greater, instead of 3–5% usually observed at given damaging doses. The role of a martensitic γ → α′ transformation in the formation of the “wave” and in the improvement in the mechanical properties of the metastable steel irradiated by neutrons is discussed.

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Authors and Affiliations

  1. Institute of Nuclear Physics, ul. Ibragimova 1, Almaty, 050032, Republic of Kazakhstan

    O. P. Maksimkin & M. N. Gusev

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  1. O. P. Maksimkin
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  2. M. N. Gusev
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Original Russian Text © O.P. Maksimkin, M.N. Gusev, 2010, published in Fizika Metallov i Metallovedenie, 2010, Vol. 110, No. 5, pp. 524–529.

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Maksimkin, O.P., Gusev, M.N. Deformation-plastic behavior of highly irradiated stainless steels 12Kh18N10T and 08Kh16N11M3 at cryogenic and elevated temperatures. Phys. Metals Metallogr. 110, 501–506 (2010). https://doi.org/10.1134/S0031918X10110104

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  • DOI: https://doi.org/10.1134/S0031918X10110104

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