SYMPOSIA PAPER Published: 01 January 1976
STP38042S

Effect of Fast Reactor Irradiation on the Tensile Properties of 20 Percent Cold-Worked Type 316 Stainless Steel

Source

Fast neutron irradiation effects on the tensile properties of 20 percent cold-worked Type 316 stainless steel are presented to fluences of 3.6 × 1022 neutrons (n)/cm2, E > 0.1 MeV (3.6 × 1026 n/m2, E > 16 fJ), at irradiation temperatures of 700 to 1125°F (644 to 880 K). The tests were performed over the range of room temperature to 1600°F (1144 K) employing strain rates of 1.82 × 10-3 to 1.82/min (3 × 10-5 to 3 × 10-2/s).

Irradiation defect hardening at irradiation temperatures below 900°F (755 K) resulted in strength increases. Thermal annealing of the original cold-work operated to reduce the strength of material irradiated near 1000 and 1100°F (811 and 866 K), in the fluence range investigated. Elongation values initially increased at most irradiation temperatures and then decreased with fluence beyond 1022 n/cm2 (1026 n/m2). Both strength and ductility decreased with increasing temperature at fluences beyond 1022 n/cm2 (1026 n/m2). The 450°F (505 K) unirradiated elongation level was maintained or improved for all irradiation conditions investigated, which suggests that low ductility will not present a problem during refueling operations.

Author Information

Fish, RL
Hanford Engineering Development Laboratory, Westinghouse Hanford Company, Richland, Wash.
Watrous, JD
Hanford Engineering Development Laboratory, Westinghouse Hanford Company, Richland, Wash.
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Details
Developed by Committee: E10
Pages: 91–100
DOI: 10.1520/STP38042S
ISBN-EB: 978-0-8031-5543-5
ISBN-13: 978-0-8031-0388-7