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Proceedings Paper

T-joints of Ti alloys with hybrid laser-MIG welding: macro-graphic and micro-hardness analyses
Author(s): R. Spina; D. Sorgente; G. Palumbo; L. D. Scintilla; M. Brandizzi; A. A. Satriano; L. Tricarico
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Paper Abstract

Titanium alloys are characterized by high mechanical properties and elevated corrosion resistance. The combination of laser welding with MIG/GMAW has proven to improve beneficial effects of both processes (keyhole, gap-bridging ability) while limiting their drawbacks (high thermal gradient, low mechanical resistance) In this paper, the hybrid Laser-GMAW welding of Ti-6Al-4V 3-mm thick sheets is investigated using a specific designed trailing shield. The joint geometry was the double fillet welded T-joint. Bead morphologies, microstructures and mechanical properties (micro-hardness) of welds were evaluated and compared to those achieved for the base metals.

Paper Details

Date Published: 6 February 2012
PDF: 10 pages
Proc. SPIE 8239, High Power Laser Materials Processing: Lasers, Beam Delivery, Diagnostics, and Applications, 82390C (6 February 2012); doi: 10.1117/12.910130
Show Author Affiliations
R. Spina, Politecnico di Bari (Italy)
D. Sorgente, Politecnico di Bari (Italy)
G. Palumbo, Politecnico di Bari (Italy)
L. D. Scintilla, Politecnico di Bari (Italy)
M. Brandizzi, Consorzio CALEF (Italy)
A. A. Satriano, Consorzio CALEF (Italy)
L. Tricarico, Politecnico di Bari (Italy)


Published in SPIE Proceedings Vol. 8239:
High Power Laser Materials Processing: Lasers, Beam Delivery, Diagnostics, and Applications
Eckhard Beyer; Timothy Morris, Editor(s)

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