Repair welding of fusion reactor components
Repair welding of fusion reactor components
Recent experimental investigations indicate that the repair welding of irradiated materials containing greater than 1 to 2.5 appm helium leads to catastrophic cracking in the heat affected zone of the weld. The high temperatures and cooling tensile stresses which occur during the welding process lead to enhanced helium bubble growth in the heat affected zone region, resulting in catastrophic cracking upon cooling. An investigation is proposed which seeks to determine the effect of stress state on the helium bubble growth process and develop engineering modifications to the welding process based upon this understanding in an attempt to alleviate or eliminate the weld cracking problem in type 316 stainless steel materials.
- University of North Texas United States
Cracks, Grain Boundaries, Chromium-Nickel-Molybdenum Steels, 360101 -- Metals & Alloys-- Preparation & Fabrication, Maintenance, High Alloy Steels, Steel-Cr17Ni12Mo3, Gas Metal-Arc Welding, Helium Embrittlement, Iron Base Alloys, Zones 360106* -- Metals & Alloys-- Radiation Effects, Fabrication, Iron Alloys, Embrittlement, Materials Studies-- (1992-), Alloys, Stresses, Welding, Austenitic Steels, Microstructure, Materials, 700480 -- Fusion Technology-- Component Development, Physical Radiation Effects, Progress Report, 36 Materials Science, Joining, Heat Affected Zone, Stainless Steels, Document Types, Gas Tungsten-Arc Welding, Radiation Effects, Bubble Growth, Stainless Steel-316, Molybdenum Alloys, Corrosion Resistant Alloys, Arc Welding, Nickel Alloys, Heat Resis, Thermonuclear Reactor Materials, Crystal Structure, Ma, Steels, 70 Plasma Physics And Fusion Technology, Chromium Alloys, Steels 700480* -- Fusion Technology-- Component Development, Chromium-Nickel Steels
Cracks, Grain Boundaries, Chromium-Nickel-Molybdenum Steels, 360101 -- Metals & Alloys-- Preparation & Fabrication, Maintenance, High Alloy Steels, Steel-Cr17Ni12Mo3, Gas Metal-Arc Welding, Helium Embrittlement, Iron Base Alloys, Zones 360106* -- Metals & Alloys-- Radiation Effects, Fabrication, Iron Alloys, Embrittlement, Materials Studies-- (1992-), Alloys, Stresses, Welding, Austenitic Steels, Microstructure, Materials, 700480 -- Fusion Technology-- Component Development, Physical Radiation Effects, Progress Report, 36 Materials Science, Joining, Heat Affected Zone, Stainless Steels, Document Types, Gas Tungsten-Arc Welding, Radiation Effects, Bubble Growth, Stainless Steel-316, Molybdenum Alloys, Corrosion Resistant Alloys, Arc Welding, Nickel Alloys, Heat Resis, Thermonuclear Reactor Materials, Crystal Structure, Ma, Steels, 70 Plasma Physics And Fusion Technology, Chromium Alloys, Steels 700480* -- Fusion Technology-- Component Development, Chromium-Nickel Steels
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