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3. Cold forming of finished parts
Generally speaking, all conventional cold forming processes are potentially applicable to Zr and Hf alloys. For the purposes of this article, we will confine ourselves to the processes used in the nuclear industry for the manufacture of fuel assembly components.
Hf alloys are generally less ductile than Zr alloys (with a significant effect of oxygen content, which makes them more brittle) and require more intermediate heat treatments to be cold-formed.
3.1 Rolling of tubes, bars and flats
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Cold forming of finished parts
Finishes and controls
Bibliography
Software tools
FORGE NxT, TRANSVALOR S.A., Parc de Haute Technologie – 694 Avenue du Dr. Maurice Donat – 06255 Mougins cedex – France, http://www.transvalor.com
Events
Conference: International Symposium on Zirconium in the Nuclear Industry, ASTM B10
Committee, every three years https://www.astm.org/MEETINGS/index.html
Standards and norms
French standards
- Corrosion of metals and alloys – Aqueous corrosion testing of zirconium alloys used in nuclear reactors. - NF EN ISO 10270 - juillet 2008
- Description and qualification of a welding procedure for metallic materials – Welding procedure qualification test – Part 5: arc welding on titanium, zirconium and their alloys. - NF EN ISO 15614-5 - septembre 2004
- Welder qualification...
Directory
Main producers of nuclear-grade zirconium alloys :
France :
Framatome, http://www.framatome.com
United States :
ATI Metals, https://www.atimetals.com
Westinghouse...
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