SYMPOSIA PAPER Published: 01 January 1979
STP38173S

Fracture Toughness of Irradiated Beryllium

Source

The fracture toughness of nuclear-grade hot-pressed beryllium after irradiation to fluences of 3.5 to 5.0 × 1021 neutrons (n)/cm2 (E > 1 MeV) was determined. Procedures and data relating to a round-robin test contributing to a standard ASTM method for unirradiated beryllium are discussed in connection with the testing of irradiated specimens. A porous grade of beryllium was also irradiated and tested, thereby enabling some discrimination between the models for describing the fracture toughness behavior of porous beryllium. The fracture toughness of unirradiated 2 percent beryllium-oxygen nuclear-grade beryllium was 12.0 MPa m1/2, which was reduced 60 percent upon irradiation at 339 K and testing at 295 K. The fracture toughness of a porous grade of beryllium was 13.1 MPa m1/2, which was reduced 68 percent upon irradiation and testing at the same conditions. Reasons for the reduction in fracture toughness upon irradiation are discussed.

Author Information

Beeston, JM
EG&G Idaho, Inc., Idaho Falls, Idaho
Price: $25.00
Contact Sales
Related
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Details
Developed by Committee: E10
Pages: 309–325
DOI: 10.1520/STP38173S
ISBN-EB: 978-0-8031-5551-0
ISBN-13: 978-0-8031-0327-6