Production and fabrication of vanadium alloys for the radiative divertor program of DIII-D

Technical Report · Fri Aug 01 04:00:00 EDT 1997

DOI:https://doi.org/10.2172/543191· OSTI ID:543191

Johnson, W. R.; Smith, J. P.

V-4Cr-4Ti alloy has been selected for use in the manufacture of a portion of the DIII-D Radiative Divertor upgrade. The production of a 1200-kg ingot of V-4Cr-4Ti alloy, and processing into final sheet and rod product forms suitable for components of the DIII-D Radiative Divertor Program (RDP), has been completed by Wah Chang (formerly Teledyne Wah Chang) of Albany, Oregon (WCA). CVN impact tests on sheet material indicate that the material has properties comparable to other previously-processed V-4Cr-4Ti and V-5Cr-5Ti alloys. Joining of V-4Cr-4Ti alloy has been identified as the most critical fabrication issue for its use in the RDP, and research into several joining methods for fabrication of the RDP components, including resistance seam, friction, and electron beam welding, and explosive bonding is being pursued. Preliminary trials have been successful in the joining of V-alloy to itself by resistance, friction, and electron beam welding processes, and to Inconel 625 by friction welding. In addition, an effort to investigate the explosive bonding of V-4Cr-4Ti alloy to Inconel 625, in both tube-to-bar and sheet-to-sheet configurations, has been initiated, and results have been encouraging.

• Research Organization: Oak Ridge National Lab., TN (United States)
• DOE Contract Number: AC03-89ER51114
• OSTI ID: 543191
• Report Number(s): DOE/ER--0313/22; ON: DE97008797
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CHROMIUM ALLOYS
DIVERTORS
DOUBLET-3 DEVICE
FABRICATION
PROGRESS REPORT
THERMONUCLEAR REACTOR MATERIALS
TITANIUM ALLOYS
VANADIUM BASE ALLOYS
WELDING