Explosive bonding of 316L to C18150 CuCrZr alloy for ITER applications.

Conference · Fri Oct 01 04:00:00 EDT 2010

OSTI ID:1028400

Puskar, Joseph David; Butler, Don J ^[1]; Goods, Steven Howard ^[2]; Brasher, Dave G ^[1]

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1. High Energy Metals, Inc., Sequim, WA
2. Sandia National Laboratories, Livermore, CA

Recent developments in the ITER experimental fusion reactor require that a 316L stainless steel substructure be bonded to a precipitation strengthened CuCrZr heat sink alloy, C18150. This bond defines the cooling water pressure boundary. Given the importance of this interface, a variety of experiments with fusion welding and solid-state joining techniques have been performed. Analysis of the joints includes mechanical measurements of bond strength and microstructural analysis using optical and electron microscopy techniques. A particular emphasis was placed on the mechanical properties of the CuCrZr, since it undergoes additional thermal processing and cannot be solutionized and aged hardened per standard heat treatments. It was determined that the explosion bonding, of all the techniques examined, maximized the residual mechanical strength of the CuCrZr. The bonding parameters were optimized to minimize the amount of mixing and porosity at the interface. The details of these results and the optimization will be discussed.

• Research Organization: Sandia National Laboratories
• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 1028400
• Report Number(s): SAND2010-7331C
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALLOYS
BONDING
ELECTRON MICROSCOPY
EXPLOSIONS
EXPLOSIVES
HEAT SINKS
HEAT TREATMENTS
MECHANICAL PROPERTIES
OPTIMIZATION
POROSITY
PRECIPITATION
PROCESSING
STAINLESS STEELS
THERMONUCLEAR REACTORS
WATER
WELDING