Influence of Neutron Irradiation on the Creep Rupture Properties of a 16Cr-13Ni Steel

    Published: Jan 1970

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    The influence of neutron irradiation (up to 1.1 x1022 n/cm2, E>0.1 MeV) on the creep rupture properties of a Cb stabilized 16Cr-13Ni steel was studied in this paper. Different heat treatments and cold work conditions and several irradiation temperatures were investigated.

    Low-temperature irradiation causes an increase in time to rupture at 650 and 750 C, whereas creep rate is reduced by more than a factor of ten. The creep ductility decreased to less than 1 percent. High-temperature irradiation does not cause a substantial change in rupture time at 650 C for the aged condition and the 50 percent cold work and 50 percent cold work+1 h 850 C conditions.

    The rupture life of specimens which were cold-worked 10 percent is strongly decreased by irradiation. Only slight changes in creep rate could be observed after high-temperature irradiation. Electron microscopy investigations indicate that the increase in rupture life and reduction in creep rate after low-temperature irradiation is due to a large number of dislocation loops. In the specimens irradiated at 650 C and above only He bubbles could be detected.


    irradiation, neutron irradiation, radiation effects, bursting, creep rate, creep rupture strength, creep tests, ductility, embrittlement, dislocations, cold working, hardening (materials), heat treatment, austenitic stainless steels, precipitation hardening steels, nickel-chromium steels

    Author Information:

    Ehrlich, K
    Institut für Material- und Festkorperforschung, Kernforschungszentrum Karlsruhe,

    Böhm, H
    Institut für Material- und Festkorperforschung, Kernforschungszentrum Karlsruhe,

    Wassilew, C
    Institut für Material- und Festkorperforschung, Kernforschungszentrum Karlsruhe,

    Committee/Subcommittee: E10.07

    DOI: 10.1520/STP26648S

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