SYMPOSIA PAPER Published: 01 January 1987
STP25663S

Tensile Properties of Irradiated Pressure Vessel Steels

Source

Yield stress and hardness changes have been demonstrated to be strongly correlated to transition temperature shifts in nuclear pressure vessel steels, and hence such measurements can be a convenient means for evaluating the role of metallurgical and environmental variables in embrittlement. We have irradiated miniature tensile specimens of over 100 alloy (chemistry and thermomechanical treatment) variants at nominal fluxes 0.5 to 5 × 1016 n/m2·s, temperatures 271 to 325°C, and fluences 0.15 to 3 × 1023 n/m2. A subset of these specimens has been tested, and the results are reported here. For both commercial and model alloys, good agreement between hardness and yield stress changes were observed. Yield stress changes were strongly influenced by copper and nickel content and by thermomechanical treatment.

Author Information

Lucas, GE
University of California, Santa Barbara, CA
Robert Odette, G
University of California, Santa Barbara, CA
Maiti, R
University of California, Santa Barbara, CA
Sheckherd, JW
University of California, Santa Barbara, CA
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Developed by Committee: E10
Pages: 379–394
DOI: 10.1520/STP25663S
ISBN-EB: 978-0-8031-5017-1
ISBN-13: 978-0-8031-0963-6