ELECTRON BEAM WELDING OF TUNGSTEN AND MOLYBDENUM

Technical Report · Fri Sep 01 04:00:00 EDT 1961

OSTI ID:4798332

Hokanson, H A; Kern, W I

Techniques for the high-voltage electron beam welding of pure tungsten and arc-cast molybdenum --0.5% titanium were developed and evaluated. Welds were produced in sheet thicknesses of 0.005, 0.050, and 0.100 in. for each material. Primary emphasis was placed on producing butt welds of maximum strength and ductility. Limited work was also performed on lap, seam, edge, and spot welding. The effects of various welding conditions on weld-zone characteristics were evaluated by visual, radiographic, fluorescent penetrant, and metallographic inspection. Welds were inspected for extent of fusion and recrystallization, grain size, cracking, porosity, and other pertinent effects. Butt welds of each thickness exhibiting optimum weld-zone characteristics were evaluated for mechanical properties. Weld ductilities were determined by transverse bend testing at temperatures to 1200 deg F. Weld tensile properties were determined at room temperature and at temperatures to 2800 deg F. Results of the metallographic and mechanical property investigations of the electron beam welds were compared with base-metal properties and with published data for other joining techniques. (auth)

• Research Organization: Hamilton Standard Div., United Aircraft Corp., Windsor Locks, Conn.
• NSA Number: NSA-16-009158
• OSTI ID: 4798332
• Report Number(s): ASD-TR-61-461
• Country of Publication: United States
• Language: English

Related Subjects

CRACKS
DUCTILITY
ELECTRON BEAMS
GRAIN SIZE
HIGH TEMPERATURE
IMPURITIES
MECHANICAL PROPERTIES
MELTING
METALLOGRAPHY
METALS, CERAMICS, AND OTHER MATERIALS
MOLYBDENUM ALLOYS
POROSITY
RADIOGRAPHY
RECRYSTALLIZATION
SHEETS
TEMPERATURE
TENSILE PROPERTIES
THICKNESS
TITANIUM ALLOYS
TUNGSTEN
WELDING