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Effect of ITER ELM Conductor Manufacturing Process on the Properties of the Inconel 625 Jacket

H. Jin, Y. Wu, F. Long, J. Qiao, Y. Tong, M. Yu, Q. Han

Fusion Science and Technology / Volume 66 / Number 1 / July-August 2014 / Pages 187-191

Technical Paper / dx.doi.org/10.13182/FST13-730

Nickel based alloy Inconel 625 is proposed as the jacket material for the ITER edge localized mode (ELM) conductor. Based on some investigation works finished in the Institute of Plasma Physics (ASIPP), the ELM conductor manufacturing process involves a compaction procedure of cold rolling and a joining procedure of argon-arc welding for the jackets. The effects of the fabrication processes on the physical and mechanical properties of the Inconel 625 steel have been investigated by observing the metallurgical structure and tensile performance. The test results show that the Inconel 625 jacket has high strength and good ductility after the ELM conductor fabrication, which conclude that the results are accordant with the ITER requirements.