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- Title
Magnetic-Field-Induced Partial-to-Full Penetration Evolution and Its Mechanism During Laser Welding.
- Authors
Xu, Jiajun; Rong, Youmin; Huang, Yu
- Abstract
The geometry and tensile strength of magnetic-field-assisted laser-welded Ti-6Al-4V joints have been studied. Due to the effects of the magnetic field on the melt flow behavior during welding, the weld penetration depth increased from 4.27 mm (partial penetration) to 5.00 mm (full penetration) and the curvature of the weld cross-section decreased, improving the weld tensile strength. The fusion zone was enlarged, showing a maximum increase of 53.4% in area when the magnetic field intensity was 90 mT. The increased penetration depth and fusion zone area suggest that application of a magnetic field can improve the energy utilization of the laser during laser butt welding. The mechanism of the magnetic-field-induced penetration depth evolution is discussed. This study provides a new energy-saving method to obtain a full-penetration weld using laser welding at lower power.
- Subjects
LASER welding; BUTT welding; PENETRATION mechanics; MAGNETIC flux density; MAGNETIC field effects; MAGNETICS; WELDING
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2019, Vol 71, Issue 7, p2296
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-019-03462-3