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3D-Analysis of Fatigue Damage in Superalloys for Turbine Blades

Eggeler, Mario (2017) 3D-Analysis of Fatigue Damage in Superalloys for Turbine Blades. Bachelor's, Technische Hochschule Köln.

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Abstract

The present work uses scanning electron microscopy (SEM) in combination with a three dimensional (3D) analysis of multiple sections, which were produced using focused ion beam (FIB) micromachining to analyze the microstructural features which influence the evolution of microstructure during high temperature fatigue. Microstructural analysis is performed on miniature fatigue samples which were tested at 950°C. Special emphasis is placed on regions close to the specimen surface where the precipitation of topologically closed packed (TCP) phases during fatigue loading is observed. The morphology of TCP phases in this selected region will be investigated, focusing on volume fraction, size distribution, shape and spatial arrangement with respect to microstructural deformation features in the specimen.

Item URL in elib:https://elib.dlr.de/115749/
Document Type:Thesis (Bachelor's)
Title:3D-Analysis of Fatigue Damage in Superalloys for Turbine Blades
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Eggeler, Mariomario.eggeler (at) dlr.deUNSPECIFIED
Date:July 2017
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Microstructure, super alloy, FIB and Slice, 3-D-Imaging
Institution:Technische Hochschule Köln
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:propulsion systems
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Virtual Engine and Validation methods
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Experimental and Numerical Methods
Deposited By: Bartsch, Dr.-Ing. Marion
Deposited On:21 Nov 2017 14:33
Last Modified:21 Nov 2017 14:33

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