Effect of low-temperature irradiation with (n,. cap alpha. ) helium production on tensile properties of 12 Cr-1 Mo VW-type steels
Conference
·
OSTI ID:6128952
Tensile specimens from small heats of ferritic (martensitic) steel based on 12 Cr-1 Mo VW have been irradiated in the High Flux Isotope Reator (HFIR) at approx. 50/sup 0/C to displacement damage levels of up to 9.5 dpa. Two heats of 12 Cr-1 Mo VW steel were irradiated, along with similar alloys to which nickel had been added. Transmutation of the /sup 58/Ni by thermal neutrons during irradiation in HFIR leads to helium production rates similar to those anticipated in a fusion reactor. Displacement damage is produced simultaneously by the fast neutron flux in the reactor. After irradiation, the specimens were tested at room temperature and 300/sup 0/C. Yield strength and ultimate tensile strength of irradiated samples displayed considerable hardening over the unirradiated condition. The increased strength was accompanied by a decrease in ductility. Indications are that the hardening resulted only from the displacement damage and was not affected by the transmutation helium formed during irradiation.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 6128952
- Report Number(s):
- CONF-810831-10; ON: DE81028578
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
360106* -- Metals & Alloys-- Radiation Effects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700209 -- Fusion Power Plant Technology-- Component Development & Materials Testing
ALLOYS
BARYON REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-MOLYBDENUM STEELS
DUCTILITY
ELEMENTS
EVEN-EVEN NUCLEI
FLUIDS
GASES
HADRON REACTIONS
HELIUM
INTERMEDIATE MASS NUCLEI
IRON ALLOYS
IRON BASE ALLOYS
ISOTOPES
MECHANICAL PROPERTIES
NEUTRON REACTIONS
NICKEL 58
NICKEL ISOTOPES
NONMETALS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
RARE GASES
STABLE ISOTOPES
STEELS
TENSILE PROPERTIES
360103 -- Metals & Alloys-- Mechanical Properties
360106* -- Metals & Alloys-- Radiation Effects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700209 -- Fusion Power Plant Technology-- Component Development & Materials Testing
ALLOYS
BARYON REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-MOLYBDENUM STEELS
DUCTILITY
ELEMENTS
EVEN-EVEN NUCLEI
FLUIDS
GASES
HADRON REACTIONS
HELIUM
INTERMEDIATE MASS NUCLEI
IRON ALLOYS
IRON BASE ALLOYS
ISOTOPES
MECHANICAL PROPERTIES
NEUTRON REACTIONS
NICKEL 58
NICKEL ISOTOPES
NONMETALS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
RARE GASES
STABLE ISOTOPES
STEELS
TENSILE PROPERTIES