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FP7

CuCrZr alloy hot cracking during electron beam welding

Funded under: FP7-EURATOM

Abstract

The precipitation hardened copper chromium zirconium material used in thermonuclear fusion machines has been selected for its good thermomechanical properties at high temperature, associated with the possibility of industrial assembling by electron beam welding. However, repeated occurrence of micro cracks which may propagate and then reduce lifetime, was observed. Consequently, the qualification of a crack-free electron beam welding technique for these copper alloys is a key issue and requires further investigation of the assembling process.

Additional information

Authors: DUROCHER A, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);LIPA M, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);AYRAULT D, CEA/DTN/LITEN, CEA/Saclay, Gif Sur Yvette (FR);CHAGNOT CH, CEA/DTN/LITEN, CEA/Saclay, Gif Sur Yvette (FR);SAIKALY W, CP2M St. Jérôme, Faculté des Sciences, Marseille (FR)
Bibliographic Reference: An article published in: Journal of Nuclear Materials, Volumes 367-370, Part 2 (2007), pp. 1208-1212
Availability: This article can be accessed online by subscribers, and can be ordered online by non-subscribers, at: http://dx.doi.org/doi:10.1016/j.jnucmat.2007.03.220
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