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Proceedings Paper

Disk-laser welding of Hastelloy X cover on René 80 turbine stator blade
Author(s): Fabrizia Caiazzo; Gaetano Corrado; Vittorio Alfieri; Vincenzo Sergi; Luigi Cuccaro
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Paper Abstract

Nickel-base alloys, such as Hastelloy X and René 80, are among the most common ones for aerospace applications, due to their mechanical strength at high temperatures and oxidation resistance properties, although processing for missile and space vehicle applications requires extensive fusion and resistance welding for fastening. Laser welding using a Yb:YAG disk laser in continuous mode emission is investigated in this paper for overlap joining of Hastelloy X plates on René 80 samples resulting from waste turbine blades. An explorative study is carried out in order to find an appropriate processing window as well as discussing bead features and common issues. Special fixtures for clamping have been specifically developed and tested. A 3-factors study with power, welding speed and focus position as governing parameters has been arranged; 2 levels have been chosen for each factor. Geometric features, defects and indications are discussed referring to the parameters main effects.

Paper Details

Date Published: 30 January 2013
PDF: 10 pages
Proc. SPIE 8677, XIX International Symposium on High-Power Laser Systems and Applications 2012, 86770O (30 January 2013); doi: 10.1117/12.2010572
Show Author Affiliations
Fabrizia Caiazzo, Univ. of Salerno (Italy)
Gaetano Corrado, Univ. of Salerno (Italy)
Vittorio Alfieri, Univ. of Salerno (Italy)
Vincenzo Sergi, Univ. of Salerno (Italy)
Luigi Cuccaro, Avio SpA (Italy)

Published in SPIE Proceedings Vol. 8677:
XIX International Symposium on High-Power Laser Systems and Applications 2012
Kerim R. Allakhverdiev, Editor(s)

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