Lifetime analysis of ferritic steel structures for high temperature fusion applications
Conference
·
· Fusion Technol.; (United States)
OSTI ID:5876727
Ferritic steels have been shown to swell much less than 316 austenitic stainless steel. For this reason ferritic steels are being considered for fusion reactor applications as an alternative to 316 austenitic stainless steel. A lifetime analysis based on crack propagation has been done for ferritic steel using typical first wall parameters. The results for ferritic steel are compared to results from a similar analysis done for 316 austenitic stainless steel. The comparison shows that ferritic steels have lower thermal stresses than 316 austenitic stainless steel by a factor of about 2. Because of the lower thermal stresses, the cyclic stresses resulting from the plasma-on/plasma-off cycles are reduced and the predicted fatigue crack growth rate is less for ferritic steels. The analysis predicts a lifetime more than 10 times longer for ferritic steel than for 316 austenitic stainless steel. The comparison clearly shows the great potential of ferritic steel over 316 austenitic stainless steel as a first wall material to achieve the high wall loading desired for future fusion reactors.
- Research Organization:
- University of Wisconsin-Madison, Madison, WI
- OSTI ID:
- 5876727
- Report Number(s):
- CONF-850310-
- Conference Information:
- Journal Name: Fusion Technol.; (United States) Journal Volume: 8:1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700201* -- Fusion Power Plant Technology-- Blanket Engineering
700209 -- Fusion Power Plant Technology-- Component Development & Materials Testing
ALLOYS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
COMPARATIVE EVALUATIONS
CORROSION RESISTANT ALLOYS
CRACK PROPAGATION
FATIGUE
FERRITIC STEELS
FIRST WALL
FRACTURE PROPERTIES
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MATERIALS TESTING
MECHANICAL PROPERTIES
MOLYBDENUM ALLOYS
NICKEL ALLOYS
POWER DENSITY
SERVICE LIFE
STAINLESS STEEL-316
STAINLESS STEELS
STEELS
STRESSES
TEMPERATURE EFFECTS
TESTING
THERMAL CYCLING
THERMAL STRESSES
THERMONUCLEAR REACTOR MATERIALS
THERMONUCLEAR REACTOR WALLS
WALL LOADING
700201* -- Fusion Power Plant Technology-- Blanket Engineering
700209 -- Fusion Power Plant Technology-- Component Development & Materials Testing
ALLOYS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
COMPARATIVE EVALUATIONS
CORROSION RESISTANT ALLOYS
CRACK PROPAGATION
FATIGUE
FERRITIC STEELS
FIRST WALL
FRACTURE PROPERTIES
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MATERIALS TESTING
MECHANICAL PROPERTIES
MOLYBDENUM ALLOYS
NICKEL ALLOYS
POWER DENSITY
SERVICE LIFE
STAINLESS STEEL-316
STAINLESS STEELS
STEELS
STRESSES
TEMPERATURE EFFECTS
TESTING
THERMAL CYCLING
THERMAL STRESSES
THERMONUCLEAR REACTOR MATERIALS
THERMONUCLEAR REACTOR WALLS
WALL LOADING