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WEB Overheating microstructural study of nickel-based superalloys from turbine blades of aircraft engines

Wednesday (27.05.2020)
16:17 - 16:17 Poster Room
Part of:
- Poster *web*Smoothing of additive manufactured parts using ns-pulsed laser source 1 Dipl.-Ing. Florian Kuisat
- Poster TBA -
- Poster *web*Combustion Synthesis of High Entropy Alloys thin films 1 Dr. Anni Wang
- Poster *web*Surface macro-smoothing and micro-structuring of additive manufactured components by using DLIP technique for controlling wetting characteristics 1 Dipl.-Ing. Florian Kuisat
- Poster *web*Influence of embedding materials on heat transfer and ignition transfer time in heterogeneous reactive material system 1 Mostafa Baloochi
- Poster TBA -
- Poster *web*Self reactive joining process with multilayer foils in lap joint configuration 1 Marcus Glaser
- Poster *web*Thermodynamics and kinetics of phase formation in magnetron-sputtered Ni/Al multilayer thin films with nanoscale morphology 1 Sascha Sebastian Riegler
- Poster *web*Femtosecond laser approach to cut Ni/Al reactive foils without ignition of a self-propagation reaction 1 Maria Amelia Martins
- Poster *web*Effect of preparation angle on atom probe tomography of reactive multilayers 1 Christian Schäfer
- Poster *web*Reactive Ni/Al multilayers with 3D Morphologies 1 Konrad Jaekel
- Poster *web*Synchrotron radiation X-ray powder diffraction and magnetometric study of natural and synthetic terms of the stannite-kesterite pseudobinary system in the low temperature regime (5-275 K) 1 Dr. Francesco Di Benedetto
- Poster *web*Coating and Drying of Sodium-Ion-Battery Electrodes 1 Julian Klemens
- Poster *web*Analytical prediction model for Direct Laser Interference Patterning 1 Dr. Bogdan Voisiat
- Poster *web*CFD Analysis of joining processes using reactive multilayers on native surface morphologies of microelectronic substrates 1 Erik Wiss
- Poster *web*Top-Hat profile in Direct Laser Interference Patterning: Is it worth it? 1 Mikhael El-Khoury
- Poster *web*Laser-based (“2D”) surface treatment of lithium-ion battery electrodes to improve the rate capability 1 Jens Sandherr
- Poster *web*Microstructure investigation of superconducting NbN thin films on copper 1 Dipl.-Ing. Ying Li
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- Poster *web*Laser functionalized PEEK-based coating systems to minimize friction and wear 1 Dr. Tim Kunze
- Poster *web*Structure and Dynamics in a Layered Na-ion Battery Cathode 1 Euan Bassey
- Poster *web*Electrode-Processing using porous nano-structured Na3V2(PO4)3 (NVP) for Sodium-Ion Batteries 1 Luca Schneider
- Poster TBA -
- Poster *web*Experimental Approach for Phase Diagram determination of Li alloys 1 Joel Fels
- Poster *web*Process Integration of Few-Layer MoS2 into a-Si:H Heterojunction pin-Photodiodes for extended Infrared Detection 1 Charles Otieno Ogolla
- Poster *web*Ti3SiC2- and Ti3AlC2-based ceramics synthesis by spark plasma sintering of preceramic paper 1 Elizaveta Sedanova
- Poster *web*Overheating microstructural study of nickel-based superalloys from turbine blades of aircraft engines 1 Dr. Ana Pastor
- Poster *web*Electrochemical thermodynamics of Lithium Batteries and their materials 1 Prof. Dr. Hans Jürgen Seifert
- Poster *web*Corrosion Analysis of a 316L Stainless Steel Gas Outlet Sealed with a Copper Ring Used in the CO2 Methanation Process 1 Ananya Prechavut
- Poster *web*Self-propagating reaction of structured reactive Al/Ni multilayers 1 Yesenia Sauni
- Poster *web*3D structured electrodes for Li-ion batteries using open porous metal foams as current collector for high energy application 1 Jonas Oehm
- Poster *web*Novel air stable single source precursor for homogeneous crystalline TiS2 thin films 1 Anja Sutorius
- Poster *web*Synthesis of nickel-copper composite with controllable nanostructure through facile solvent control as positive electrode for high-performance supercapacitors 1 Dr. Damin Lee
- Poster *web*Towards understanding response generation in conductometric gas sensors 1 Stefan Kucharski
- Poster Effects of 3D electrode design on high-energy silicon-graphite anode materials 1 Yijing Zheng

Session -F: Functional Materials, Surfaces, and Devices
Belongs to:
Topic X: Poster Session

Nickel-based superalloys, especially single-crystal (SC) ones, are employed in critical materials for turbine blades used in the aviation, aerospace and gas engines. High temperature strength capabilities similar to those SC alloys have been achieved in a second-generation columnar grain alloys. Advanced turbine blades, where high-temperature strength and creep life are required, are subjected to degradation during service by combined effects of temperature, mechanical stresses and environmental conditions.


The purpose of this paper is to compare the effects produced by overheating on two blades manufactured in two different materials, PWA 1440 and PWA 1426. The first one corresponds to a SC alloy and the second one to a columnar grain superalloy. The typical microstructure of this type of superalloys consists of ɣ' rectangular precipitates (Ni3Al) into the Ni ɣ matrix, which has a face-centered cubic structure (FCC). It could also present ɣ/ɣ' eutectic-islands and, occasionally, areas with a coarser ɣ' phase within the matrix. In addition, carbides could be occasionally observed due to the carbon combination with other elements such as Cr, Ta and Hf, around the interdendritic arms in the PWA 1426 superalloy microstructure. Overheating would lead to modifications in the superalloy microstructure, producing changes in the ɣ' precipitates concentration, size and distribution, ɣ/ɣ' eutectic coalescence and dissolution, and carbides decomposition and dissolution.


In order to determine if overheating has occurred in the analysed blades, metallographic samples were prepared for microstructural characterization and observed in an optical microscope. Carbides were analysed by EDX spectrometer coupled to a FE-SEM microscope. Furthermore, replicas were prepared for the characterization of the superalloys phases and precipitates using the selected area electron diffraction technique (SAED), coupled to a TEM microscope. Finally, chemical analysis was carried out by an XRF spectrometer.

Dr. Ana Pastor
National Institute of Aerospace Technology (INTA)
Additional Authors:
  • Dr. Mª Pilar Valles González
    INTA (Instituto Nacional de Técnica Aeroespacial)
  • Pablo Boixareu Autran
    INTA (Instituto Nacional de Técnica Aeroespacial)
  • Ph.D. María García-Martínez
    INTA Instituto Nacional de Técnica Aeroespacial


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