SYMPOSIA PAPER Published: 09 February 2018
STP87019850013

Fatigue Behavior at 650°C of 20% Cold-Worked Type 316 Stainless Steel Irradiated at 550°C in the High-Flux Isotope Reactor (HFIR)

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Type 316 stainless steel in the 20% cold-worked condition was irradiated in the High Flux Isotope Reactor (HFIR) and subsequently tested in fatigue. The specimens were irradiated at 550°C to damage levels of 8 to 12 displacements per atom (dpa) and transmutation helium levels of 300 to 500 atomic parts per million (appm). Fatigue testing at 650°C revealed that cyclic life was not significantly affected by the irradiation. However, unlike the results of tests of the same material at 550°C, no endurance limit was observed. The absence of an endurance limit is interpreted in terms of thermal creep.

Author Information

Grossbeck, M., L.
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN, US
Liu, K., C.
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN, US
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Details
Developed by Committee: E10
Pages: 732–744
DOI: 10.1520/STP87019850013
ISBN-EB: 978-0-8031-7679-9
ISBN-13: 978-0-8031-0592-8