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Temperature dependences of the delayed hydride cracking rate of fuel claddings made of zirconium alloys of various compositions

  • Diagnostics and Mechanical Test Techniques
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Russian Metallurgy (Metally) Aims and scope

Abstract

The temperature dependences of the delayed hydride cracking (DHC) rate of Zr-1Nb and Zr-0.8Nb-0.8Sn-0.3Fe alloy claddings are studied in the range 127–300°C in comparison with the data obtained for Zr-2.5Nb and Zircaloy-4 alloys earlier. The samples are in the state of cold deformation and stress relief at 400°C for 24 h and in the state of preliminary hydrogen saturation to a hydrogen concentration of 0.02 wt %. As the strength of a zirconium alloy decreases and its ductility increases, the DHC rate and its high-temperature limit for a linear Arrhenius equation decreases, and the fractographic patterns of the fracture surfaces are different.

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Authors and Affiliations

  1. Bochvar High-Technology Research Institute of Inorganic Materials OAO VNIINM, ul. Rogova 5a, Moscow, 123098, Russia

    V. A. Markelov, A. Yu. Gusev, P. V. Kotov, V. V. Novikov & N. S. Saburov

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  1. V. A. Markelov
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  2. A. Yu. Gusev
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  3. P. V. Kotov
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  4. V. V. Novikov
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  5. N. S. Saburov
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Correspondence to V. A. Markelov.

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Original Russian Text © V.A. Markelov, A.Yu. Gusev, P.V. Kotov, V.V. Novikov, N.S. Saburov, 2012, published in Deformatsiya i Razrushenie Materialov, 2012, No. 11, pp. 42–47.

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Markelov, V.A., Gusev, A.Y., Kotov, P.V. et al. Temperature dependences of the delayed hydride cracking rate of fuel claddings made of zirconium alloys of various compositions. Russ. Metall. 2014, 341–346 (2014). https://doi.org/10.1134/S0036029514040077

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  • DOI: https://doi.org/10.1134/S0036029514040077

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