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  • 1
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 519-521 (July 2006), p. 1139-1144 
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Fusion welding of 7xxx aluminium alloy plates has been investigated for aerospaceapplications using autogenous laser welding and hybrid laser-MIG welding. Nd:YAG and Yb-fibrelasers have been used, with two different focussed spot sizes in each case. Autogenous and hybridwelding of 12.7mm thick plate using the Yb-fibre laser with a 0.6mm diameter spot was selected forfurther development, on the basis of penetration and weld quality achieved. These welds wereacceptable to the highest quality class B (stringent) of BS EN ISO 13919-2:2001, with a porosity ofonly 0.3% of the cross-sectional area of the weld, and close to class A of AWS D17.1. Transverseproof strengths of ~60% of parent material were achieved. Development of hybrid welding isongoing with novel fillers to refine weld metal grain structure and improve weld properties
    Type of Medium: Electronic Resource
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