English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
Add to Basket
  Local TagsRelease HistoryDetailsSummary

Released
Journal Article

The effect of γ matrix channel width on the compositional evolution in a multi-component nickel-based superalloy

MPS-Authors
/persons/resource/persons224913

Saksena,  Aparna
High Performance Alloys for Extreme Environments, Project Groups, Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;
Hydrogen Embrittlement in High Performance Alloys, Interdepartmental and Partner Groups, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;

/persons/resource/persons185411

Gault,  Baptiste
Atom Probe Tomography, Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;
Imperial College, Royal School of Mines, Department of Materials, London, SW7 2AZ, UK;

/persons/resource/persons212871

Kontis,  Paraskevas
High Performance Alloys for Extreme Environments, Project Groups, Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;
Department of Materials Science and Engineering, NTNU Norwegian University of Science and Technology, Trondheim 7034, Norway;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Saksena, A., Kubacka, D., Gault, B., Spieker, E., & Kontis, P. (2022). The effect of γ matrix channel width on the compositional evolution in a multi-component nickel-based superalloy. Scripta Materialia, 219: 114853. doi:10.1016/j.scriptamat.2022.114853.


Cite as: https://hdl.handle.net/21.11116/0000-000A-A336-1
Abstract
High-temperature diffusion affects the long-term stability of superalloys and hence their service life. Yet, details of the mechanisms remain elusive. Here, the γ-γʹ microstructure itself is used as a nanoscale diffusion couple to study the diffusion of alloying elements within narrow and wide γ channels during annealing for up to 100 h at 750 °C in a nickel-based superalloy. Predictions from thermodynamic and kinetic calculations are compared to near-atomic experimental measurements as a function of the γ channel width. An overlooked width-dependence of compositional evolution is revealed that may directly affect the microstructural and compositional predictions of service life of nickel-based superalloys.