Damage nucleation during transverse creep of a directionally solidified Ni-based superalloy

Jean Charles Stinville, Lorena Mataveli Suave, Florent Mauget, Lionel Marcin, Patrick Villechaise, Tresa M. Pollock, Jonathan Cormier

Research output: Contribution to journalArticlepeer-review


A directionally solidified Ni-based superalloy DS200 is investigated under low (750 °C) and high temperature (900 °C) transverse creep. In-situ creep tests with strain measurements are performed to capture creep strain evolution in the individual crystallographic grains. Moreover, the microstructure configurations that promote damage nucleation are identified as a function of the loading condition. High angle grain boundaries are the preferred sites for crack nucleation under all investigated loading conditions. However, grain boundary configurations promoting crack nucleation are observed to significantly differ as a function of the loading conditions. Such observations are discussed in view of creep behavior and damage processes.

Original languageEnglish (US)
Article number144089
JournalMaterials Science and Engineering: A
StatePublished - Nov 14 2022


  • Crack nucleation
  • DS200
  • Directionally solidified Ni-based superalloy
  • GTD444
  • Transverse creep

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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