Correlative Microscopy—Novel Methods and Their Applications to Explore 3D Chemistry and Structure of Nanoscale Lattice Defects: A Case Study in Superalloys

Makineni SK, Lenz M, Kontis P, Li Z, Kumar A, Felfer P, Neumeier S, Herbig M, Spiecker E, Raabe D, Gault B (2018)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2018

Journal

JOM Journal of the Minerals, Metals and Materials Society Springer Verlag (Germany)

Publisher: Minerals, Metals and Materials Society

Pages Range: 1-8

DOI: 10.1007/s11837-018-2802-7

Abstract

Nanoscale solute segregation to or near lattice defects is a coupled diffusion and trapping phenomenon that occurs in superalloys at high temperatures during service. Understanding the mechanisms underpinning this crucial process will open pathways to tuning the alloy composition for improving the high-temperature performance and lifetime. Here, we introduce an approach combining atom probe tomography with high-end scanning electron microscopy techniques, in transmission and backscattering modes, to enable direct investigation of solute segregation to defects generated during high-temperature deformation such as dislocations in a heat-treated Ni-based superalloy and planar faults in a CoNi-based superalloy. Three protocols were elaborated to capture the complete structural and compositional nature of the targeted defect in the alloy.

 

Authors with CRIS profile

Malte Lenz Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung) Peter Felfer Professur für Atom Probe Tomography Steffen Neumeier Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften) Erdmann Spiecker Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung)

Additional Organisation(s)

Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung) Interdisziplinäres Zentrum, Center for Nanoanalysis and Electron Microscopy (CENEM)

Involved external institutions

Max-Planck-Institut für Eisenforschung GmbH (MPIE) / Max Planck Institute for Iron Research DE Germany (DE)

How to cite

APA:

Makineni, S.K., Lenz, M., Kontis, P., Li, Z., Kumar, A., Felfer, P.,... Gault, B. (2018). Correlative Microscopy—Novel Methods and Their Applications to Explore 3D Chemistry and Structure of Nanoscale Lattice Defects: A Case Study in Superalloys. JOM Journal of the Minerals, Metals and Materials Society, 1-8. https://doi.org/10.1007/s11837-018-2802-7

MLA:

Makineni, Surendra Kumar, et al. "Correlative Microscopy—Novel Methods and Their Applications to Explore 3D Chemistry and Structure of Nanoscale Lattice Defects: A Case Study in Superalloys." JOM Journal of the Minerals, Metals and Materials Society (2018): 1-8.

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