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Effect of heat treatment on the high temperature fatigue life of single crystalline nickel base superalloy additively manufactured by means of selective electron beam melting

Meid, Carla and Dennstedt, Anne and Ramsperger, Markus and Pistor, Julian and Ruttert, Benjamin and Lopez-Galilea, Inmaculada and Theisen, Werner and Körner, Carolin and Bartsch, Marion (2019) Effect of heat treatment on the high temperature fatigue life of single crystalline nickel base superalloy additively manufactured by means of selective electron beam melting. Scripta Materialia, 168, pp. 124-128. Elsevier. DOI: 10.1016/j.scriptamat.2019.05.002 ISSN 1359-6462

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Abstract

The high temperature low cycle fatigue behavior of specimens manufactured from a single crystalline nickel base superalloy processed by selective electron beam melting (SEBM) has been investigated with respect to the effect of different heat treatments. The fatigue lifetime of heat treated material was significantly higher than that of asbuilt material. Applying hot isostatic pressing (HIP) with an integrated heat treatment resulted in even longer fatigue life. Lifetime limiting crack initiation occurred at interfaces of melting layers, at micro-porosity generated during solidification or, in HIP treated samples, at precipitates which formed at the location of collapsed pores.

Item URL in elib:https://elib.dlr.de/128753/
Document Type:Article
Title:Effect of heat treatment on the high temperature fatigue life of single crystalline nickel base superalloy additively manufactured by means of selective electron beam melting
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Meid, CarlaDLR WF (ENM)UNSPECIFIED
Dennstedt, AnneAnne.Dennstedt (at) dlr.deUNSPECIFIED
Ramsperger, MarkusLehrstuhl für Werkstoffwissenschaften, Friedrich-Alexander-Universität Erlangen-NürnbergUNSPECIFIED
Pistor, JulianLehrstuhl für Werkstoffwissenschaften, Friedrich-Alexander-Universität Erlangen-NürnbergUNSPECIFIED
Ruttert, BenjaminRuhr-Universität BochumUNSPECIFIED
Lopez-Galilea, InmaculadaRuhr-Universität BochumUNSPECIFIED
Theisen, WernerRuhr-Universität BochumUNSPECIFIED
Körner, CarolinLehrstuhl für Werkstoffwissenschaften, Friedrich-Alexander-Universität Erlangen-NürnbergUNSPECIFIED
Bartsch, Marionmarion.bartsch (at) dlr.dehttps://orcid.org/0000-0002-3952-2928
Date:7 May 2019
Journal or Publication Title:Scripta Materialia
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:168
DOI :10.1016/j.scriptamat.2019.05.002
Page Range:pp. 124-128
Publisher:Elsevier
ISSN:1359-6462
Status:Published
Keywords:Low cycle fatigue (LCF), Single crystal superalloy, Selective electron beam melting (SEBM), Hot isostatic pressing (HIP) Microstructure
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:22 Oct 2019 14:45
Last Modified:22 Oct 2019 14:45

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