Dynamic recovery observed in distinct grains within a polycrystalline nickel-based superalloy during cyclic high temperature fatigue via high energy X-ray diffraction microscopy

Elastic micromechanical fields are tracked for a nickel-based superalloy polycrystal via high energy X-ray diffraction microscopy (HEDM) and corresponding intragranular deformation metrics are determined with peak broadening analysis during cyclic high temperature loading. A low solvus, high refractory (LSHR) sample with 252 grains was subjected to uniaxial tension and held under fixed displacement while thermally cycling between 460°C and 770°C, with intermittent HEDM characterization to study the grain average response to thermo-mechanical deformation. Elevated temperatures were found to allow for heterogeneous amounts of recovery amongst distinct grains within the sampled region, indicating complex grain interactions; the extent of recovery was greater at higher temperatures.

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Work Title Dynamic recovery observed in distinct grains within a polycrystalline nickel-based superalloy during cyclic high temperature fatigue via high energy X-ray diffraction microscopy
Access
Open Access
Creators
  1. Sven Gustafson
  2. Darren Pagan
  3. Paul Shade
  4. Michael Sangid
Keyword
  1. Thermomechanical fatigue
  2. microstructure
  3. X-ray diffraction
  4. recovery
  5. synchrotron radiation
License Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
Work Type Article
Acknowledgments
  1. NSF CMMI 16-51956
  2. NSF DMR-1829070
Publisher
  1. Scripta Materialia
Publication Date October 12, 2020
Publisher Identifier (DOI)
  1. 10.1016/j.scriptamat.2020.10.004
Related URLs
Deposited February 25, 2021 12:25

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Version 1
published

  • Created
  • Updated Acknowledgments Show Changes
    Acknowledgments
    • NSF CMMI 16-51956, NSF DMR-1829070
  • Added Creator Sven Gustafson
  • Added Creator Darren Pagan
  • Added Creator Paul Shade
  • Added Creator Michael Sangid
  • Added gustafson_ScriptaMat_DynamicRecovery_final.pdf
  • Updated Publication Date, License Show Changes
    Publication Date
    • 10/12/2020
    • 2020-10-12
    License
    • https://creativecommons.org/licenses/by/4.0/
  • Updated Publisher, Publisher Identifier (DOI), Related URLs Show Changes
    Publisher
    • Scripta Materialia
    Publisher Identifier (DOI)
    • 10.1016/j.scriptamat.2020.10.004
    Related URLs
    • https://doi.org/10.1016/j.scriptamat.2020.10.004
  • Deleted Creator Paul Shade
  • Added Creator Paul Shade
  • Updated License Show Changes
    License
    • https://creativecommons.org/licenses/by/4.0/
    • https://creativecommons.org/licenses/by-nc-nd/4.0/
  • Published