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Poster De Conférence Année : 2022

Localization of plastic strain in Alloy 718 using Digital Image Correlation

Malo Jullien
  • Fonction : Auteur
  • PersonId : 1409088
Damien Texier
Ali Rouwane
  • Fonction : Auteur
  • PersonId : 738188
  • IdHAL : ali-rouwane
Jean-Charles Passieux

Résumé

High Resolution-Digital Image Correlation (HR-DIC) is a powerful tool to assess quantitative kinematic fields across length scales. Recently, HR-DIC was used to identify slip activity at the microstructure scale in different single- or poly-crystalline materials under tensile loading. Identification of slip systems was possible using micrographs from either scanning electron microscopes (SEM) or laser scanning confocal microscopes (LSCM). SEM micrographs provide a high spatial resolution and scanning repeatability while LSCM micrographs provide out-of-plane measurements. Both imaging techniques are therefore complementary to identify crystallographic slip activity at the sub-grain scale. In the present work, HR-DIC paired with ex-situ LSCM observations was used in order to identify strain localization and subsequently slip activity in the Alloy 718 under tensile loading at room temperature. Tensile specimens were subjected to a two-step tensile test, interrupted at 0.1% and 0.4% plastic strain. Full field inplane kinematics fields and height measurements were assessed using the DisOpticalFlow OpenCV library.
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Dates et versions

hal-04676240 , version 1 (23-08-2024)

Identifiants

  • HAL Id : hal-04676240 , version 1

Citer

Malo Jullien, Damien Texier, Ali Rouwane, Jean-Charles Passieux, Marc Legros. Localization of plastic strain in Alloy 718 using Digital Image Correlation. Nanomechanical Testing in Materials Research and Development VIII, Oct 2022, Split, Croatia. ⟨hal-04676240⟩
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