Title :
Copper alloys used for support units of ITER blanket modules: Compression and tension properties
Author :
Kalinin, G.M. ; Strebkov, Yu.S. ; Krestnikov, N.S. ; Parshutin, E.V.
Author_Institution :
R&D Inst. of Power Eng. (RDIPE), Moscow, Russia
Abstract :
Four flexible support units are used for each first wall module bracing to the vacuum vessel of ITER. The support unit consists of fastening bolt, flexible cartridge and collar for compensation of thermal expansion. The collar made of copper alloy operates under considerable compression load. The performed structural analysis shows that stresses in the collar exceed the design allowable value specified in ITER Structural Design Criteria for In-Vessel components (SDC-IG) for CuCrZr-IG alloy. The ITER SDC-IC design allowables for CuCrZr-IG alloy were based on tensile data for solution annealed and age material. There is a potential to keep structural integrity if material with higher strength will be used. It is also reasonable to use real compression data for specification of allowable stresses.
Keywords :
Tokamak devices; ageing; chromium alloys; compressive strength; copper alloys; fusion reactor blankets; fusion reactor design; solution annealing; tensile strength; thermal expansion; yield stress; zirconium alloys; CuCrZr; ITER blanket modules; ITER design; SDC-IG; aging; compression; copper alloys; first wall module; flexible cartridge; in-vessel components; solution annealing; structural analysis; structural design criteria; tensile data; tension property; thermal expansion; vacuum vessel; yield stress; Aging; Annealing; Chemical analysis; Compressive stress; Copper alloys; Heat treatment; Manufacturing; Performance analysis; Tensile stress; Testing; ITER components; compression properties; copper alloys; tensile properties;
Conference_Titel :
Fusion Engineering, 2009. SOFE 2009. 23rd IEEE/NPSS Symposium on
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-2635-5
Electronic_ISBN :
978-1-4244-2636-2
DOI :
10.1109/FUSION.2009.5226503
