Laser welding technique for titanium alloy sheet
- Ist. R.T.M., Torino (Italy)
- Lumonics Ltd., Warwickshire (United Kingdom)
- Aerospatiale, Louis-Bleriot (France). Centre Commun de Recherches
- Motoren und Turbinen Union, Munchen (Germany)
In order to achieve reliable welds with minimal distortion for the fabrication of aerospace industrial components, several techniques were carried out on Ti6Al4V and Ti6Al2Sn4Zr2Mo sheets of 1.6 mm and 2 mm thickness using a CO{sub 2} and a Nd-YAG laser. Test 1: A satisfactory weld can be obtained by using a CO{sub 2} CW laser with a filler wire. Test 2: Before laser welding the edges were shaped with a special relief defined incorporated filler, which allows it to avoid the classical filler wire. Test 3: A cosmetic butt weld without filler, obtained by defocusing the CO{sub 2} CW laser beam, enables it to eliminate the undercut and result in a smooth surface. Test 4: High power pulsed Nd-YAG laser equipped with fiber optics and f5{prime} focus lens was employed, which produces the autogenous butt welds with full penetration and regular bead profile. The undercut and slump could be controlled by pulse energy, pulse duration, frequency, waveform and overlapping rate.
- OSTI ID:
- 445291
- Report Number(s):
- CONF-940367-; ISBN 0-87171-441-8; TRN: IM9713%%27
- Resource Relation:
- Conference: advanced joining technologies for new materials II conference, Cocoa Beach, FL (United States), 2-4 Mar 1994; Other Information: PBD: 1994; Related Information: Is Part Of Advanced joining technologies for new materials 2: Proceedings; PB: 298 p.
- Country of Publication:
- United States
- Language:
- English
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