002137988 001__ 2137988
002137988 003__ SzGeCERN
002137988 005__ 20160309234805.0
002137988 0247_ $$2DOI$$a10.1007/s10894-014-9745-y
002137988 0248_ $$aoai:cds.cern.ch:2137988$$pcerncds:CERN
002137988 041__ $$aeng
002137988 100__ $$aFang, Chao$$uASIPP, Anhui
002137988 245__ $$aThe Laser Welding with Hot Wire of 316LN Thick Plate Applied on ITER Correction Coil Case
002137988 260__ $$c2014
002137988 520__ $$aITER correction coil (CC) cases have characteristics of small cross section, large dimensions, and complex structure. The cases are made of heavy thick (20 mm), high strength and high toughness austenitic stainless steel 316LN. The multi-pass laser welding with hot wire technology is used for the case closure welding, due to its low heat input and deformation. In order to evaluate the reliability of this welding technology, 20 mm welding samples with the same groove structure and welding depth as the cases were welded. High purity argon was used as the shielding gas to prevent oxidation because of the narrowness and depth of the weld. In this paper investigation of, microstructure characteristics and mechanical properties of welded joints using optimized welding parameters are presented. The results show that the base metal, fusion metal, and heat affected zone (HAZ) are all have fully austenitic microstructure, and that the grain size of fusion metal was finer than that of the base metal. The welding resulted in an increase of hardness in the fusion metal and HAZ. It was confirmed that the tensile strength of fusion metal was higher than that of base metal and the impact toughness value is higher than industry standard requirement. Thus, this welding process was determined to be reliable for manufacture of the ITER CC cases manufacture.
002137988 595__ $$aWEBOFSCIENCE-NEW-2016
002137988 65017 $$2SzGeCERN$$aEngineering
002137988 690C_ $$aARTICLE
002137988 690C_ $$aCERN
002137988 700__ $$aSong, Yuntao$$uASIPP, Anhui
002137988 700__ $$aWu, Weiyue$$uASIPP, Anhui
002137988 700__ $$aWei, Jing$$uASIPP, Anhui
002137988 700__ $$aZhang, Shuquan$$uASIPP, Anhui
002137988 700__ $$aLi, Hongwei$$uITER China, Beijing
002137988 700__ $$aDolgetta, N$$uITER, St. Paul Lez Durance
002137988 700__ $$aLibeyre, P$$uITER, St. Paul Lez Durance
002137988 700__ $$aCormany, C$$uITER, St. Paul Lez Durance
002137988 700__ $$aSgobba, S$$uCERN
002137988 773__ $$c752-758$$n6$$pJ. Fusion Energy$$v33$$y2014
002137988 916__ $$sh$$w201610
002137988 960__ $$a13
002137988 980__ $$aARTICLE