SEDL / STP / STP1366-EB / STP12430S

The Question of Saturation of Void Swelling in Fe-Cr-Ni Austenitic Alloys

Garner, FA
Senior Staff Scientist, Pacific Northwest National Laboratory, Richland, WA

Black, CA
Product Engineer, Wyman-Gorden Investment Casting, Carson City, NV

Pages: 11    Published: Jan 2000

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Abstract

Whereas in earlier publications it appeared that a possible saturation of neutron-induced void swelling might be developing at temperatures of 400 and 427°C in annealed Fe-Cr-Ni model alloys in a manner that was dependent on composition, data obtained at higher neutron exposures in EBR-II have led to the conclusion that such an expectation was erroneous. At all temperatures in the range 400–650°C, the neutron induced swelling eventually reaches ∼1%/dpa and continues to very high swelling levels thereafter without any hint of saturation.