Abstract
Irradiation creep tests were conducted in vacuum on textured Zircaloy-2 foil specimens bombarded with 4.75 MeV protons at a current density of 3.5 μA/cm 2. Tests were performed at 375°C in the stress range 103–241 MPa. Both cold-worked, stress-relieved and fully recrystallized materials were used. Radiation hardening and enhanced irradiation creep behavior were both observed. Radiation hardening effects were more pronounced in the recrystallized material than the cold-worked material. Anisotropie irradiation creep behavior was also observed, and it was found to be similar in magnitude to the thermal creep anisotropy exhibited at the same test conditions. Finally, the observed proton irradiation creep rates were somewhat larger than those which might be expected for neutron irradiation creep under the same conditions.
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