WorldWideScience

Sample records for steel-astm-a212

  1. Swedish Work on Brittle-Fracture Problems in Nuclear Reactor Pressure Vessels

    International Nuclear Information System (INIS)

    Grounes, M.

    1966-03-01

    , the new steels mentioned above, and the U.S. steels ASTM A212B and ASTM A302B, are given. Results from a series of irradiations at temperatures between 60 deg C and 300 deg C to doses between 2x10 18 and 3x10 19 n/cm 2 (> 1 MeV) show that a saturation effect is obtained at higher temperatures in some, but not all, steels. This means that, after some irradiation, further irradiation causes no further change in the properties. The experiments show that similar steels, and even different heats of the same steel, may behave in an entirely different manner as a result of irradiation. Experiments showing the effects of differences in neutron flux and neutron spectrum are described. Calculations show that the effect of differences in neutron spectra between materials testing reactors and pressure vessels may be considerable

  2. Swedish Work on Brittle-Fracture Problems in Nuclear Reactor Pressure Vessels

    Energy Technology Data Exchange (ETDEWEB)

    Grounes, M

    1966-03-15

    , the new steels mentioned above, and the U.S. steels ASTM A212B and ASTM A302B, are given. Results from a series of irradiations at temperatures between 60 deg C and 300 deg C to doses between 2x10{sup 18} and 3x10{sup 19} n/cm{sup 2} (> 1 MeV) show that a saturation effect is obtained at higher temperatures in some, but not all, steels. This means that, after some irradiation, further irradiation causes no further change in the properties. The experiments show that similar steels, and even different heats of the same steel, may behave in an entirely different manner as a result of irradiation. Experiments showing the effects of differences in neutron flux and neutron spectrum are described. Calculations show that the effect of differences in neutron spectra between materials testing reactors and pressure vessels may be considerable.