Fracture toughness testing on miniature specimens using the electropotential techniques
Conference
·
OSTI ID:5222062
Ferritic steels are currently being considered as fusion first wall candidates because of the relatively low thermal stresses induced during temperature cycles. However, fracture toughness is of concern in this alloy class. Limitations on irradiation space dictate that special techniques by developed for post-irradiation fracture toughness measurements. This study investigates the feasibility of electropotential techniques using single specimens to evalute fracture toughness. The electropotential technique was applied to obtain continuous crack extension measurements on miniaturized specimens and to trace out J versus ..delta..a curves. The J-integral results obtained from A286 small specimens compare favorably with those obtained from large specimens. Also, the experimental work shows that electropotential and multiple specimen methods produce consistent data in HT-9 in the transition region where crack extension occurs by mixed cleavage and dimpled rupture.
- Research Organization:
- Hanford Engineering Development Lab., Richland, WA (USA)
- DOE Contract Number:
- AC14-76FF02170
- OSTI ID:
- 5222062
- Report Number(s):
- HEDL-SA-2102-FP; CONF-800673-3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700209 -- Fusion Power Plant Technology-- Component Development & Materials Testing
ALLOYS
CHROMIUM ALLOYS
CORROSION RESISTANT ALLOYS
CRACKS
DATA
DATA FORMS
EXPERIMENTAL DATA
FAILURES
FIRST WALL
FRACTURES
GRAPHS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
NUMERICAL DATA
STAINLESS STEELS
STEELS
STRESSES
THERMAL CYCLING
THERMAL STRESSES
THERMONUCLEAR REACTOR WALLS
360103* -- Metals & Alloys-- Mechanical Properties
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700209 -- Fusion Power Plant Technology-- Component Development & Materials Testing
ALLOYS
CHROMIUM ALLOYS
CORROSION RESISTANT ALLOYS
CRACKS
DATA
DATA FORMS
EXPERIMENTAL DATA
FAILURES
FIRST WALL
FRACTURES
GRAPHS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
NUMERICAL DATA
STAINLESS STEELS
STEELS
STRESSES
THERMAL CYCLING
THERMAL STRESSES
THERMONUCLEAR REACTOR WALLS