An examination into weldability of irradiated material by a laser welding method for repair of ITER blanket
Creators
- 1. Kawasaki Plant Systems, Ltd., Tokyo (Japan)
- 2. Japan Atomic Energy Agency, Fusion Research and Development Directorate, Naka, Ibaraki (Japan)
Description
SS316L(N)-IG is the candidate material for the in-vessel and ex-vessel components of ITER (International Thermonuclear Experimental Reactor). This paper describes an examination into weldability of irradiated and un-irradiated SS316L(N)-IG for coolant piping and investigation of the mechanical properties of welding joints as well as the effect of helium generation on weldability. A YAG laser welding process was used for repair welding of the water cooling branch pipelines. It was clarified that welding of SS316L(N)-IG irradiated up to 0.3 dpa (He content: about 3 appm) can be carried out without a significant deterioration of tensile properties due to helium accumulation. Therefore, repair of coolant pipes for the ITER blanket can be performed by the laser welding process. (author)
Additional details
Publishing Information
- Journal Title
- FAPIG (Tokyo)
- Journal Issue
- no.173
- Journal Page Range
- p. 16-20
- ISSN
- 0014-5645
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 38008856
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Descriptors DEI
- BREEDING BLANKETS; BUBBLES; HELIUM; INTERSTITIAL HELIUM GENERATION; IRRADIATION; ITER TOKAMAK; LASER WELDING; MATERIALS TESTING; MECHANICAL PROPERTIES; NEUTRONS; REPAIR; STAINLESS STEEL-316L; THERMONUCLEAR REACTOR MATERIALS; WELDABILITY
- Descriptors DEC
- ALLOYS; AUSTENITIC STEELS; BARYONS; CARBON ADDITIONS; CHROMIUM ALLOYS; CHROMIUM STEELS; CHROMIUM-MOLYBDENUM STEELS; CHROMIUM-NICKEL STEELS; CHROMIUM-NICKEL-MOLYBDENUM STEELS; CLOSED PLASMA DEVICES; CORROSION RESISTANT ALLOYS; ELEMENTARY PARTICLES; ELEMENTS; FABRICATION; FERMIONS; FLUIDS; GASES; HADRONS; HEAT RESISTANT MATERIALS; HEAT RESISTING ALLOYS; HIGH ALLOY STEELS; IRON ALLOYS; IRON BASE ALLOYS; JOINING; LOW CARBON-HIGH ALLOY STEELS; MATERIALS; MOLYBDENUM ALLOYS; NICKEL ALLOYS; NONMETALS; NUCLEONS; PHYSICAL RADIATION EFFECTS; RADIATION EFFECTS; RARE GASES; REACTOR COMPONENTS; STAINLESS STEELS; STEEL-CR17NI12MO3-L; STEELS; TESTING; THERMONUCLEAR DEVICES; THERMONUCLEAR REACTORS; TOKAMAK DEVICES; TOKAMAK TYPE REACTORS; TRANSITION ELEMENT ALLOYS; WELDING
Optional Information
- Notes
- 13 refs., 8 figs., 1 tab.