Electron emission and plasma formation during laser beam welding

Conference · Fri Mar 01 04:00:00 EST 1985 · Weld. Res. Suppl.; (United States)

OSTI ID:6718466

Dixon, R D; Lewis, G K

A 400 watt average power Nd-YAG laser (1.06 micrometer wave-length) was used to study the effects of plasma generation on welding. Laser spot welds on aluminum and stainless steel were monitored optically, acoustically and electrically. Results show that the laser is optically coupled to the workpiece, significant current is emitted by the workpiece, current can be detected from the plasma, optical radiation emitted by the plasma generation can be monitored using microphones. The plasmas propagate as laser supported combustion waves and are expected to contribute significantly to heat input during welding. 10 references, 20 figures, 2 tables.

• Research Organization: Los Alamos National Lab., NM
• OSTI ID: 6718466
• Conference Information: Journal Name: Weld. Res. Suppl.; (United States)
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
ALLOYS
ALUMINIUM ALLOYS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
CURRENT DENSITY
DATA
EXPERIMENTAL DATA
FABRICATION
FUNCTIONS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
JOINING
LASER WELDING
LASER-PRODUCED PLASMA
MATERIALS
NICKEL ALLOYS
NUMERICAL DATA
PLASMA
POWER
STAINLESS STEEL-304
STAINLESS STEELS
STEELS
WELDING
WORK FUNCTIONS