
Proceedings Paper
Experimental analysis of selective laser melting process for Ti-6Al-4V turbine blade manufacturingFormat | Member Price | Non-Member Price |
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Paper Abstract
The present work focuses on the use of Selective Laser Melting (SLM) technique for manufacturing of near-net-shape
aircraft component prototypes with Ti-6Al-4V titanium alloy, which has already successfully employed for the
production of turbine blades since it combines mechanical properties with excellent wear resistance.
The main characteristic of SLM is layer manufacturing which allows to obtain complex shaped elements using three
dimensional computer aided design data, with the addition of particular features like channels or cavities which can not
been easily obtained with traditional technologies. The other key aspect in comparison with investment casting is shorter
post-processing.
The feasibility of manufacturing turbine blades with mentioned process using a laser sintered machine EOSINT M 270
(Titanium version) is analysed. The first experimental phase has dealt with the definition of processing parameters which
would guarantee laser sintered part maximum density. Preliminary specimens have been manufactured to define any
material-dependent scaling value to control dimensional shrinkage.
Afterwards a prototype of a turbine blade has been produced using optimal process parameter set. The element
positioning and support definition are discussed as they influence the overall job time and the need of post processing
operations.
Further analyses have been carried out to check the whole structure of the prototype using X-rays and Fluorescent
Penetrant Inspection, aiming to point out possible imperfections; no defects have been detected. Furthermore, laser
sintered part dimensional inspection has been successively performed via coordinate measuring machine. Eventually, the
microstructure of the prototype has been examined.
Paper Details
Date Published: 30 January 2013
PDF: 10 pages
Proc. SPIE 8677, XIX International Symposium on High-Power Laser Systems and Applications 2012, 86771H (30 January 2013); doi: 10.1117/12.2010577
Published in SPIE Proceedings Vol. 8677:
XIX International Symposium on High-Power Laser Systems and Applications 2012
Kerim R. Allakhverdiev, Editor(s)
PDF: 10 pages
Proc. SPIE 8677, XIX International Symposium on High-Power Laser Systems and Applications 2012, 86771H (30 January 2013); doi: 10.1117/12.2010577
Show Author Affiliations
Fabrizia Caiazzo, Univ. of Salerno (Italy)
Francesco Cardaropoli, Univ. of Salerno (Italy)
Vittorio Alfieri, Univ. of Salerno (Italy)
Francesco Cardaropoli, Univ. of Salerno (Italy)
Vittorio Alfieri, Univ. of Salerno (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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