Challenges for single-crystal (SX) crack cladding

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dc.identifier.uri Rottwinkel, Boris Schweitzer, Luiz Noelke, Christian Kaierle, Stefan Wesling, Volker 2019-03-27T11:25:35Z 2019-03-27T11:25:35Z 2014
dc.identifier.citation Rottwinkel, B.; Schweitzer, L.; Noelke, C.; Kaierle, S.; Wesling, V.: Challenges for single-crystal (SX) crack cladding. In: Physics Procedia 56 (2014), S. 301-308. DOI:
dc.description.abstract The formation of cracks in single-crystal (SX) turbine blades is a common problem for aero-engines. If cracks are located under the tip-area, the blade-repair is not possible. A new method to repair these cracks is to clad with single-crystal-technology. To reduce the loss of material and working time, notches are used to remove the affected crack zone. The used notch geometries must be weldable and also permit the material solidification in the same oriented plane as the original microstructure. For that, a thermal gradient has to be introduced in order to guide the grain growth. The process characteristics of laser cladding, such as small local heat input and controlled material supply, make it an efficient process to fill the notch. However, there are challenges to achieve a SX structure without cracks and pores. The unstable energy distribution may result in a polycrystalline structure. Current achievements and further challenges are presented in this paper. eng
dc.language.iso eng
dc.publisher Amsterdam : Elsevier B.V.
dc.relation.ispartof International Conference on Laser Assisted Net Shape Engineering, LANE 2014, September 8-11, 2014, Fürth, Germany
dc.relation.ispartofseries Physics Procedia 56 (2014), Nr. C
dc.rights CC BY-NC-ND 3.0 Unported
dc.subject Aero engine repair eng
dc.subject Crack cladding eng
dc.subject Single-crystal cladding eng
dc.subject.ddc 530 | Physik ger
dc.title Challenges for single-crystal (SX) crack cladding
dc.type article
dc.type conferenceObject
dc.type Text
dc.relation.issn 1875-3884
dc.bibliographicCitation.volume 56
dc.bibliographicCitation.firstPage 301
dc.bibliographicCitation.lastPage 308
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

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