FRACTURE DEVELOPMENT AND MATERIAL PROPERTIES IN PVRC-PENN STATE PRESSURE VESSEL; FATIGUE-CRACK PROPAGATION AND FRACTURE STUDIES OF A PRESSURE-VESSEL STEEL TEMPER EMBRITTLED TO SIMULATE IRRADIATION DAM (To Purchase Call 1-800-854-7179 USA/Canada or 303-397
A characterization of materials was conducted in relation to the terminal@ burst-type@ failure of a PVRC pressure vessel of A212-A (now A515 Gr. 60) steel at 110F. Materials were characterized with respect to chemical composition@ tensile properties@ fracture toughness including Charpy-V and Tear Energies@ Drop-Weight NDT@ micrography and electron fractography. The initiation and growth of a 34-in. long fatigue crack was shown to be caused by mechanical aspects rather than material deficiencies and the plastic-instability burst@ brittle run@ and crack arrest were in complete accord with the Fracture Analysis Diagram.