Disk laser welding of Ti6Al4V alloy

Ernesto Mastrocinque, Gaetano Corrado, Fabrizia Caiazzo, Nicola Pasquino, Vincenzo Sergi, Francesco Acerra

    Research output: Chapter in Book/Report/Conference proceedingConference proceedingpeer-review


    In this study butt welding tests on 3 mm-thick Ti6Al4V sheets were performed using a 2-kW Yb:YAG disk laser. Titanium alloys are widely used in the aircraft industry, due to their high strength-to-weight ratio, corrosion resistance, operating temperature and bonding with composite materials (electrochemical compatibility, similar coefficients of thermal expansion). A full factorial experimental plan was conducted using three values of power and three welding speeds to obtain
    good-quality butt joints. The joints were characterised in terms of the weld geometry, geometrical defects and porosity by X-ray examinations and the resistance by tensile tests. Vickers microhardness tests were performed from the base metal to the melted zone. The weld with the best geometric characteristics, least geometric defects and porosity content was selected for the tensile tests. Tensile tests have given satisfactory results because the selected specimen broke in the original gauge length, but away from the welds.
    Original languageEnglish
    Title of host publicationICPR 21st International Conference on Production Research
    EditorsDieter Spath, Rolf Ilg, Tobias Krause
    Number of pages6
    Publication statusPublished - 2011
    Event21st International Conference on Production Research: Innovation in Product and Production - Stuttgart, Germany
    Duration: 31 Jul 20114 Aug 2011
    Conference number: 21


    Conference21st International Conference on Production Research: Innovation in Product and Production
    Abbreviated titleICPR 21
    Internet address


    • laser beam welding
    • Yb:YAG disk laser
    • Ti6Al4V titanium alloy


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