Hardness tests on irradiated pressure vessel steel
This investigation can be summarized by the following conclusions: the three heats of pressure vessel steel all showed, approximately, a 10% increase in the average weld metal hardness when irradiated to a fluence of about 1 x 10/sup 18/ n/cm/sup 2/, E > MeV; the activation energy, as determined by the Meechan-Brinkman method, for the recovery of radiation induced hardness was found to be 0.60 +- 0.06 eV; and the activation energy of 0.6 eV is approximately equal to that calculated for vacancy migration in alpha iron, suggesting that the radiation-produced defect clusters are vacancy in nature.
- Research Organization:
- Ames Lab., IA (USA)
- DOE Contract Number:
- W-7405-ENG-82
- OSTI ID:
- 6606850
- Report Number(s):
- IS-T-942
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
22 GENERAL STUDIES OF NUCLEAR REACTORS
220200 -- Nuclear Reactor Technology-- Components & Accessories
36 MATERIALS SCIENCE
360106* -- Metals & Alloys-- Radiation Effects
ALLOYS
ANNEALING
CARBON STEELS
CONTAINERS
CRYSTAL STRUCTURE
HARDNESS
HEAT TREATMENTS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MECHANICAL PROPERTIES
MICROSTRUCTURE
PHYSICAL RADIATION EFFECTS
PRESSURE VESSELS
RADIATION EFFECTS
REACTOR MATERIALS
STEEL-ASTM-A302
STEEL-ASTM-A533-B
STEELS
220200 -- Nuclear Reactor Technology-- Components & Accessories
36 MATERIALS SCIENCE
360106* -- Metals & Alloys-- Radiation Effects
ALLOYS
ANNEALING
CARBON STEELS
CONTAINERS
CRYSTAL STRUCTURE
HARDNESS
HEAT TREATMENTS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MECHANICAL PROPERTIES
MICROSTRUCTURE
PHYSICAL RADIATION EFFECTS
PRESSURE VESSELS
RADIATION EFFECTS
REACTOR MATERIALS
STEEL-ASTM-A302
STEEL-ASTM-A533-B
STEELS