Fracture toughness of irradiated Nimonic PE16 at high temperatures
Description
Fracture toughness results are presented for the nickel-base austenitic alloy Nimonic PE16 following hot tension tests on irradiated compact-tension specimens 6.5 mm thick and data analysis using linear elastic and post-yield techniques. Postirradiation fracture toughness values decreasing from /similar/70 to 10 MNm$sup -3$/$sup 2$ were found between 550 and 8000C for specimens with yield strengths of 380 to 517 MNm$sup -2$ after irradiation at /similar/500 and 7000C to 4.5 to 10.2x10$sup 20$ (thermal) neutrons (n)/cm$sup -2$ and 17- to 24-ppm helium. Below 5500C the specimens failed with gross plastic deformation. The deterioration in fracture toughness was attributed to helium bubble growth and coalescence on stressed grain boundaries. 18 refs
Additional details
Publishing Information
- Journal Title
- Am. Soc. Test. Mater., Spec. Tech. Publ.
- Journal Issue
- no.683
- Series
- Am. Soc. Test. Mater., Spec. Tech. Publ.
- ISSN
- 0066-0558
Conference
- Title
- 9. international symposium on the effects of radiation on structural materials.
- Dates
- 11 Jul 1978.
- Place
- Richland, WA, USA.
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 11551868
- Subject category
- S36: MATERIALS SCIENCE; S22: GENERAL STUDIES OF NUCLEAR REACTORS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- BUBBLES; EMBRITTLEMENT; FATIGUE; FRACTURE PROPERTIES; HELIUM; HIGH TEMPERATURE; NEUTRONS; NICKEL BASE ALLOYS; NIMONIC PE16; PHYSICAL RADIATION EFFECTS; REACTOR COMPONENTS
- Descriptors DEC
- ALLOYS; BARYONS; BORON ADDITIONS; CARBON ADDITIONS; CHROMIUM ALLOYS; ELEMENTARY PARTICLES; ELEMENTS; FERMIONS; HADRONS; HEAT RESISTING ALLOYS; IRON ALLOYS; MECHANICAL PROPERTIES; MOLYBDENUM ALLOYS; NICKEL ALLOYS; NIMONIC; NONMETALS; NUCLEONS; RADIATION EFFECTS; RARE GASES; TITANIUM ALLOYS; TRANSITION ELEMENT ALLOYS; ZIRCONIUM ADDITIONS