Application of Diffraction-Amalgamated Grain Boundary Tracking (DAGT) to fatigue crack propagation behavior in high strength aluminum alloy

Hui Li, Hiroyoki Toda, Kentaro Uesugi, Akihisa Takeuchi, Yoshio Suzuki, Masakazu Kobayashi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The fatigue crack propagation behavior in an Al-Zn-Mg-Cu alloy was investigated by amalgamating X-ray diffraction (XRD) with grain boundary tracking (GBT). The integrated technique, Diffraction-Amalgamated Grain Boundary Tracking (DAGT), provides new possibilities for mapping grain morphologies and crystallographic orientations in three-dimension (3D). 3D crack morphologies at different propagation stages in the bulk of metallic materials were successfully obtained by using Synchrotron Radiation X-ray Microtomography (SRCT). Using 2D slices of the 3D crack, the crack length increment was measured to calculate the crack growth rate which varies significantly. Typical crack morphology, such as crack tilt, is detected by the observation of 2D tomographic slice image. The observed interaction between fatigue crack and polycrystalline microstructures can be analyzed in 3D. Through this synthesis of techniques, DAGT, a detailed direct assessment of microstructure and crack propagation behaviors has been achieved.

Original languageEnglish
Title of host publication3DMS 2014 - Proceedings of the 2nd International Congress on 3D Materials Science
EditorsDominique Bernard, Jean-Yves Buffiere, Tresa Pollock, Tresa Pollock, Henning Friis Poulsen, Anthony Rollett, Anthony Rollett, Anthony Rollett, Anthony Rollett, Michael Uchic
PublisherJohn Wiley and Sons Inc.
Pages91-96
Number of pages6
ISBN (Electronic)9781118945452
DOIs
Publication statusPublished - 2014
Event2nd International Congress on 3D Materials Science, 3DMS 2014 - Annecy, France
Duration: Jun 29 2014Jul 2 2014

Publication series

Name3DMS 2014 - Proceedings of the 2nd International Congress on 3D Materials Science

Other

Other2nd International Congress on 3D Materials Science, 3DMS 2014
CountryFrance
CityAnnecy
Period6/29/147/2/14

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Materials Science(all)

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