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Effect of HIP parameters on the micro-structural evolution of a single crystal Ni-based superalloy

Lopez-Galilea, Inmaculada and Huth, Stefan and Bartsch, Marion and Theisen, Werner (2011) Effect of HIP parameters on the micro-structural evolution of a single crystal Ni-based superalloy. Advanced Materials Research, Vol. 278, pp. 72-77. Trans Tech Publications. doi: 10.4028/www.scientific.net/AMR.278.72.

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For reducing the porosity of single crystal (SX) nickel-based superalloys, Hot Isostatic Pressing (HIP) is used. High pressures of about 100-170 MPa lead to local deformation, which close the pores. However, since HIP also requires high temperatures (1000-1200°C) it has a pronounced effect on the microstructure and the local distribution of elements. This contribution analyses the effect of different HIP treatments on both the microstructure and the segregation of the SX superalloy LEK94 in the as-precipitation-hardened state. In addition, the effects of rapid or slow cooling are analyzed. To distinguish the effect of pressure from those of temperature, the HIPed samples are compared with specimens annealed at atmospheric pressure.

Item URL in elib:https://elib.dlr.de/71548/
Document Type:Article
Title:Effect of HIP parameters on the micro-structural evolution of a single crystal Ni-based superalloy
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Lopez-Galilea, InmaculadaRuhr-Universität BochumUNSPECIFIEDUNSPECIFIED
Huth, StefanRuhr-Universität BochumUNSPECIFIEDUNSPECIFIED
Theisen, WernerRuhr-Universität BochumUNSPECIFIEDUNSPECIFIED
Journal or Publication Title:Advanced Materials Research
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Volume:Vol. 278
Page Range:pp. 72-77
Publisher:Trans Tech Publications
Series Name:Scientific Net
Keywords:Nickel based super alloy, hot isostatic pressing, precipitation hardening
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Propulsion Systems (old)
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Virtual Engine and Validation Methods (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Experimental and Numerical Methods
Deposited By: Bartsch, Dr.-Ing. Marion
Deposited On:14 Nov 2011 10:23
Last Modified:08 Mar 2018 18:21

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