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Mechanical Behaviour of Inconel 718 Thin-Walled Laser Welded Components for Aircraft Engines
Joint Authors
Lertora, Enrico
Mandolfino, Chiara
Gambaro, Carla
Source
International Journal of Aerospace Engineering
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-12-30
Country of Publication
Egypt
No. of Pages
9
Abstract EN
Nickel alloys are very important in many aerospace applications, especially to manufacture gas turbines and aero engine components, where high strength and temperature resistance are necessary.
These kinds of alloys have to be welded with high energy density processes, in order to preserve their high mechanical properties.
In this work, CO2 laser overlap joints between Inconel 718 sheets of limited thickness in the absence of postweld heat treatment were made.
The main application of this kind of joint is the manufacturing of a helicopter engine component.
In particular the aim was to obtain a specific cross section geometry, necessary to overcome the mechanical stresses found in these working conditions without failure.
Static and dynamic tests were performed to assess the welds and the parent material fatigue life behaviour.
Furthermore, the life trend was identified.
This research pointed out that a full joint shape control is possible by choosing proper welding parameters and that the laser beam process allows the maintenance of high tensile strength and ductility of Inconel 718 but caused many liquation microcracks in the heat affected zone (HAZ).
In spite of these microcracks, the fatigue behaviour of the overlap welds complies with the technical specifications required by the application.
American Psychological Association (APA)
Lertora, Enrico& Mandolfino, Chiara& Gambaro, Carla. 2014. Mechanical Behaviour of Inconel 718 Thin-Walled Laser Welded Components for Aircraft Engines. International Journal of Aerospace Engineering،Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-1035961
Modern Language Association (MLA)
Lertora, Enrico…[et al.]. Mechanical Behaviour of Inconel 718 Thin-Walled Laser Welded Components for Aircraft Engines. International Journal of Aerospace Engineering No. 2014 (2014), pp.1-9.
https://search.emarefa.net/detail/BIM-1035961
American Medical Association (AMA)
Lertora, Enrico& Mandolfino, Chiara& Gambaro, Carla. Mechanical Behaviour of Inconel 718 Thin-Walled Laser Welded Components for Aircraft Engines. International Journal of Aerospace Engineering. 2014. Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-1035961
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1035961