HEAVY SECTION STEEL TECHNOLOGY PROGRAM TECHNICAL REPORT NO. 21 THE EFFECT OF TEMPERATURE AND NEUTRON IRRADIATION UPON THE FATIGUE-CRACK PROPAGATION BEHAVIOR OF ASTM A533 GRADE B, CLASS 1 STEEL

摘要

The fatigue-crack propagation behavior of ASTM A533 Grade B, Class 1 steel was studied within the framework of linear-elastic fracture mechanics. Tests were conducted at 75°F (24°C) and 550°F (288°C) on unirradiated material, and on material irradiated at 550°F to 2.3 - 2.8 x 1019 n/cm2 and 5.3- 5.7 x 1019 n/cm2 (E > 1 MeV). In general, at the cyclic frequency used (600 cpm), neither temperature nor neutron irradiation had a significant effect on the fatigue-crack propagation.