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Application of Analytical Electron Microscopy and Tomographic Techniques for Metrology and 3D Imaging of Microstructural Elements in Allvac® 718Plus™

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Proceedings of the 9th International Symposium on Superalloy 718 & Derivatives: Energy, Aerospace, and Industrial Applications

Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

Abstract

The development of innovative materials for aeronautics requires use of modern research methods to characterize their structure on the level from micro- to nanoscale. Allvac® 718Plus™ (718Plus) is a relatively new nickel-based superalloy that has high strength , is corrosion resistant and has improved higher temperature performance compared to the 718 , while retaining the excellent processing characteristics of this alloy. The aim of this study was the application of analytical electron microscopy and tomographic techniques to perform the qualitative and quantitative characterization of structural elements in the wrought and cast 718Plus . Determination of crystallographic structure of selected phases was performed using electron diffraction method supported by JEMS software. 3D imaging of microstructural elements and chemical compositions of selected phases were performed using STEM-EDX tomography technique using a probe Cs corrected Titan3 G2 60-300 with ChemiSTEM™ system. Tomographic reconstruction was performed using Simultaneous Iterative Reconstruction Technique (SIRT) method on a tilt series, which allowed visualizing the three-dimensional distribution of selected elements (Al, Cr) in the analysed volume. The shape and distribution of γ′ particles in the reconstructed volume, as well as complex particle composition of η-phase were analyzed using STEM -EDX and FIB-SEM tomography techniques. 3D imaging of precipitates in the interdendritic region (Laves and η phases) was performed using FIB-SEM tomography technique. The 3D visualization of reconstructed space was performed using ImageJ and Avizo Fire software. The study showed that advanced microscopic techniques and test methods in conjunction with tomography technique permits to obtain complementary information about the microstructure of 718Plus superalloy .

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Acknowledgements

The authors acknowledge Pratt & Whitney, USA for providing the material used in this investigations. The authors thank A. Gruszczyński, MSc. (AGH-UST) for his assistance in FIB-SEM investigations. The authors acknowledge the support from the AGH-UST statutory project (No. 11.11.110. 299).

Author information

Authors and Affiliations

  1. Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Al. A. Mickiewicza 30, 30-059, Kraków, Poland

    A. Kruk, G. Cempura, S. Lech & A. Czyrska-Filemonowicz

  2. Pratt & Whitney, 400 Main Street, M/S 114-40, East Hartford, USA

    A. M. Wusatowska-Sarnek

Authors
  1. A. Kruk
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  2. G. Cempura
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  3. S. Lech
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  4. A. M. Wusatowska-Sarnek
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  5. A. Czyrska-Filemonowicz
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Corresponding author

Correspondence to A. Kruk .

Editor information

Editors and Affiliations

  1. General Electric, Cincinnati, Ohio, USA

    Eric Ott

  2. West Virginia University, Morgantown, West Virginia, USA

    Xingbo Liu

  3. University West, Trollhättan, Sweden

    Joel Andersson

  4. China Iron and Steel Research Institute, Beijing, China

    Zhongnan Bi

  5. ‎ATI Specialty Materials, Monroe, North Carolina, USA

    Kevin Bockenstedt

  6. Wyman Gordon Forgings Inc., Houston, Texas, USA

    Ian Dempster

  7. General Electric, Cincinnati, Ohio, USA

    Jon Groh

  8. Carpenter Technology, Philadelphia, Pennsylvania, USA

    Karl Heck

  9. United States Department of Energy, Albany, New York, USA

    Paul Jablonski

  10. Pratt & Whitney, East Hartford, Connecticut, USA

    Max Kaplan

  11. Honda Motor Co. Ltd., Saitama, Japan

    Daisuke Nagahama

  12. QuesTek Innovations, Evanston, Illinois, USA

    Chantal Sudbrack

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Kruk, A., Cempura, G., Lech, S., Wusatowska-Sarnek, A.M., Czyrska-Filemonowicz, A. (2018). Application of Analytical Electron Microscopy and Tomographic Techniques for Metrology and 3D Imaging of Microstructural Elements in Allvac® 718Plus™. In: Ott, E., et al. Proceedings of the 9th International Symposium on Superalloy 718 & Derivatives: Energy, Aerospace, and Industrial Applications. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-89480-5_69

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