STP570

    Swelling in Electron-Irradiated Type 316 Stainless Steel

    Published: Jan 1975


      Format Pages Price  
    PDF Version (708K) 17 $25   ADD TO CART
    Complete Source PDF (13M) 17 $192   ADD TO CART


    Abstract

    To study void swelling behavior for clues regarding the anticipated performance of Type 316 stainless steel in fast reactor environments, two series of electron irradiation experiments were conducted. The first series of experiments were conducted on material which was prototypic of fast test reactor (FTR) steels in composition, but not microstructure. The results indicated that swelling values exceeding 100 percent could easily be obtained in annealed Type 316 and that cold rolling of this material could lead to an increase in the incubation fluence and a reduction in the subsequent swelling rate. The void volume fraction in both the annealed and cold-rolled specimens developed at a constant rate after the incubation period.

    In the second series of experiments, specimens were extracted from prototypic cold-drawn FTR tubing, which contained a variable density of deformation twins not found in the cold-rolled specimens. Repetitive experiments showed that each area in the specimen possessed a different incubation fluence but eventually developed the same steady-state swelling rate at a given temperature. This spot-to-spot variation in incubation behavior was strong enough to obscure possible heat-to-heat variations in bulk-integrated behavior. Although the length of the incubation period could not be conclusively related to the deformation twin density, regions containing very high densities exhibited the longest incubation fluences.

    Keywords:

    radiation, stainless steel, swelling, voids, electrons, high voltage, microscopes, radiation effects


    Author Information:

    Laidler, JJ
    Manager, Materials Development, senior research scientist, and senior research scientist, Hanford Engineering Development Laboratory, Richland, Wash.

    Mastel, B
    Manager, Materials Development, senior research scientist, and senior research scientist, Hanford Engineering Development Laboratory, Richland, Wash.

    Garner, FA
    Manager, Materials Development, senior research scientist, and senior research scientist, Hanford Engineering Development Laboratory, Richland, Wash.


    Paper ID: STP33707S

    Committee/Subcommittee: E10.07

    DOI: 10.1520/STP33707S


    CrossRef ASTM International is a member of CrossRef.