http://www.cnr.it/ontology/cnr/individuo/prodotto/ID182880
A study of the shielding gas influence on the laser beam welding of AA5083 aluminium alloys by in-process spectroscopic investigation (Articolo in rivista)
- Type
- Label
- A study of the shielding gas influence on the laser beam welding of AA5083 aluminium alloys by in-process spectroscopic investigation (Articolo in rivista) (literal)
- Anno
- 2006-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1016/j.optlaseng.2005.09.002 (literal)
- Alternative label
Teresa Sibillano, Antonio Ancona; Vincenzo Berardi; Emanuela Schingaro; Giuseppe Basile; Pietro Mario Lugarà (2006)
A study of the shielding gas influence on the laser beam welding of AA5083 aluminium alloys by in-process spectroscopic investigation
in Optics and lasers in engineering; Elsevier, Amsterdam (Paesi Bassi)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Teresa Sibillano, Antonio Ancona; Vincenzo Berardi; Emanuela Schingaro; Giuseppe Basile; Pietro Mario Lugarà (literal)
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
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- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- CNR-INFM Regional Laboratory LIT3, via Orabona 4, 70126 Bari, Italy
Dipartimento Interateneo di Fisica - Universita` e Politecnico di Bari, via Orabona 4, 70126 Bari, Italy
Dipartimento di Geomineralogia, Universita` degli Studi di Bari, via Orabona 4, 70126 Bari, Italy (literal)
- Titolo
- A study of the shielding gas influence on the laser beam welding of AA5083 aluminium alloys by in-process spectroscopic investigation (literal)
- Abstract
- In laser welding, the shielding gas is commonly used to stabilize the welding process, to
improve welded joints features and to protect the welded seam against oxidization. Besides the
type of shielding gas used, the nozzle parameters play an essential role. In fact, the chemical
composition of the shielding gas and the flow geometry are key factors limiting the size of the
plasma plume and its contamination by the surrounding atmosphere, and affecting the final
quality of the welded joints.
In this work, we present an experimental study on the complex physical phenomena
occurring during the interaction between the plasma plume, the laser beam and the shielding
gas by using an in-process spectroscopic investigation of the plasma plume characteristics
under different operating conditions. A correlation was found between the spectral features
and the formation of oxide layers on the surface of the welding seam, caused by defective gas
shielding and by the vaporization of alloying elements. Experimental results have given useful indications for the development of innovative welding nozzle for application in laser welding
of aluminium alloys. (literal)
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