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Friction Stir Welding for a Nuclear Fusion Reactor

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Abstract:

During a recent upgrade to the U.S. Department of Energy’s Princeton Plasma Physics Laboratory operates an experimental nuclear fusion reactor known as the National Spherical Torus Experiment (NSTX) a new center stack design was selected that required an innovative joining method to fabricate the bundled copper extrusions found in the center stack. Each of the 20-ft long copper extrusions used in the center stack was made from a quarter hard copper alloy (CDA10700) joined to lead extensions made from a high-strength copper alloy (CDA 18150). A team consisting of PPPL, Major Tool, and EWI selected Friction Stir Welding (FSW) to join these two materials together as its solid-state nature would provide a higher joint efficiency while minimizing distortion and preserving properties of the heat treatable lead extension flag.

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Periodical:

Materials Science Forum (Volumes 783-786)

Pages:

1808-1813

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.783-786.1808

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Cite this paper

Online since:

May 2014

Authors:

Zak Pramann*, Brian Thompson, Jim Chrzanowski, Dave Mennel

Keywords:

Copper, Friction Stir Welding (FSW)

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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References

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