Fatigue Crack Propagation by Channel Fracture in Irradiated 316 Stainless Steel

S Jitsukawa; A Hishinuma; M Suzuki

doi:10.1520/STP16517S

SYMPOSIA PAPER Published: 01 January 1996

STP16517S

Fatigue Crack Propagation by Channel Fracture in Irradiated 316 Stainless Steel

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Fatigue crack growth rates (da/dN)in an irradiated cold worked 316 stainless steel were obtained at temperatures of 298, 573 and 673 K. Specimens were prepared from a duct material, which irradiated at 683 K to 20 displacements per atom in an experimental fast breeder reactor.

Fatigue loading caused channel fracture to occur in the irradiated material. This was accompanied by acceleration of da/dN. Both the increment of da/dN and the fraction of channel fracture in fracture surface became larger with stress intensity factor range at temperatures of 573 and 673 K, but they were not at 298 K. Results indicate that irradiation induced channel fracture increased da/dN.

Author Information

Jitsukawa, S

Japan Atomic Energy Research Institute, Tokai-Mura, Ibaraki-Ken, Japan

Hishinuma, A

Japan Atomic Energy Research Institute, Tokai-Mura, Ibaraki-Ken, Japan

Suzuki, M

Japan Atomic Energy Research Institute, Tokai-Mura, Ibaraki-Ken, Japan

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Details

Developed by Committee: E10

Pages: 933–944

DOI: 10.1520/STP16517S

ISBN-EB: 978-0-8031-5328-8

ISBN-13: 978-0-8031-2016-7

Fatigue Crack Propagation by Channel Fracture in Irradiated 316 Stainless Steel

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