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Chausse, F., Paillard, P., Bertrand, E. & Rueckert, G. (2016) Hybrid laser-metal active gas welding of S460ML steel plates: Weldability and consequences of dropping on weld quality. J. Laser Appl. 28 UNSP 022416.
Added by: Richard Baschera (2016-05-13 14:58:52) |
| Type de référence: Article DOI: 10.2351/1.4943991 Numéro d'identification (ISBN etc.): 1042-346X Clé BibTeX: Chausse2016 Voir tous les détails bibliographiques  |
Catégories: ID2M Créateurs: Bertrand, Chausse, Paillard, Rueckert Collection: J. Laser Appl. |
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| Résumé |
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This work investigates the weldability of S460ML steel using a hybrid laser-metal active gas (MAG) process and the effect of dropping on material properties. Dropping is the creation of regularly scattered drops on the back side of thick plates during full penetration hybrid laser-MAG welding. As these drops can reach several millimeters in diameter, it is an unacceptable defect since it lowers esthetic properties. Besides the geometrical aspect, mechanical properties are also affected by dropping. In order to check the consequences of dropping on weld quality: metallographic, mechanical, and dilution analyses have been performed. Results confirm the good weldability of S460ML using hybrid welding with proper welding parameters. If dropping occurs, it enhances heterogeneity in chemistry and microstructure, and welding defects such as porosity and undercuts. However, these properties and defects remain tolerable. Drops can be removed by grinding, making the weld acceptable. (C) 2016 Laser Institute of America.
Added by: Richard Baschera |