Future regeneration processes for high-pressure turbine blades

Future regeneration processes for high-pressure turbine blades In this paper, new technologies for repairing turbine blades are presented, in which the manufacturing processes and materials mechanisms are incorporated. Since the turbine blades taken into consideration here are components of high pressure turbines, the focus of this paper lies on nickel-based alloys. Depending on the size and form of the defects present on the blades, two procedures can be used for repairing turbine blades: brazing and/or cladding. In one approach, a hybrid repair brazing process was developed, in which the filler metal and the hot gas corrosion protective coating were applied by thermal spraying. Subsequently, a combined brazing and aluminizing process was carried out. In a second approach, a laser cladding process for crack repair was developed wherein single crystalline solidification of the cladding material was carried out. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png CEAS Aeronautical Journal Springer Journals

Future regeneration processes for high-pressure turbine blades

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Publisher
Springer Vienna
Copyright
Copyright © 2017 by Deutsches Zentrum für Luft- und Raumfahrt e.V.
Subject
Engineering; Aerospace Technology and Astronautics
ISSN
1869-5582
eISSN
1869-5590
D.O.I.
10.1007/s13272-017-0277-9
Publisher site
See Article on Publisher Site

Abstract

In this paper, new technologies for repairing turbine blades are presented, in which the manufacturing processes and materials mechanisms are incorporated. Since the turbine blades taken into consideration here are components of high pressure turbines, the focus of this paper lies on nickel-based alloys. Depending on the size and form of the defects present on the blades, two procedures can be used for repairing turbine blades: brazing and/or cladding. In one approach, a hybrid repair brazing process was developed, in which the filler metal and the hot gas corrosion protective coating were applied by thermal spraying. Subsequently, a combined brazing and aluminizing process was carried out. In a second approach, a laser cladding process for crack repair was developed wherein single crystalline solidification of the cladding material was carried out.

Journal

CEAS Aeronautical JournalSpringer Journals

Published: Dec 26, 2017

References

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