MT25 Conference 2017 - Timetable, Abstracts, Orals and Posters

Mechanical properties of aged 316LN butt-welding joint at cryogenic temperature for CFETR CS model coil

30 Aug 2017, 13:15

1h 45m

Posters Area

Poster Presentation of 1h45m F8 - Structural Materials for Magnets Wed-Af-Po3.10

Speaker

Huan Jin

Description

Institute of Plasma Physics Chinese Academy of Science (ASIPP) is designing and manufacturing a Central Solenoid Mode Coil (CSMC) to develop the manufacturing process for China Fusion Engineering Test Reactor (CFETR) CS coil. The hybrid magnet structure is employed for the CSMC, and modified 316LN stainless steel is selected as the jacket material for the Nb3Sn cable in conduit conductor, which will be connected by butt-welding to reach the required maximum length of about 780 m. Automatic welding and manual welding methods are used for the circular and corner parts of the round in square tubes respectively. The purpose of this paper is to qualify the 316LN welding joint performance. Tensile properties, fracture toughness and fatigue crack growth rates of the aged 316LN butt-welded joint at liquid helium temperature were evaluated and reported.

Presentation materials

Microstructure and Mechanical Properties of High Manganese Steel Processed by Cold Working and Aging at 4.2K - Jin Huan.pdf