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Small-punch technique for measurement of material degradation of irradiated ferritic alloys

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Abstract

The yield stress and fracture strain of irradiated ferritic alloys were measured using a small-punch test. The characteristics of hardening and intergranular embrittlement induced during neutron irradiation (0.94×1023 n m−2) at 395‡C in ferritic alloys doped with Cu, P and/or C were investigated. The effect of neutron irradiation on hardening was found to be greater in alloys doped with Cu and/or P than in C-containing alloys. The neutron irradiation produced a more substantial increase in the ductile-brittle transition temperature in the Cu-doped alloy compared with the other alloys and cause a significant decrease in the ductility of the Cu-doped alloy. Intergranular and transgranular fracture occurred in the alloys doped without and with C, respectively. The neutron irradiation did not alter the fracture mode.

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Authors and Affiliations

  1. Department of Mechanical Engineering, The University of Calgary, T2N 1N4, Calgary, Alberta, Canada

    X. Mao

  2. Ames Laboratory, Iowa State University, 50011, Ames, IA, USA

    J. Kameda

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  1. X. Mao
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  2. J. Kameda
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Mao, X., Kameda, J. Small-punch technique for measurement of material degradation of irradiated ferritic alloys. J Mater Sci 26, 2436–2440 (1991). https://doi.org/10.1007/BF01130192

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  • DOI: https://doi.org/10.1007/BF01130192

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