3D characterisation of short fatigue crack in Ti 6246

S. Birosca, F. A. Garcia-Pastor, M. Karadge, J. Y. Buffiere, M. Preuss

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

Abstract

In the present study, fatigue crack propagation was imaged non-destructively in 3 dimensions during in-situ fatigue loading of Ti-6246 using X-ray microtomography on beam-line ID19 at the European Synchrotron Radiation Facility (ESRF). Phase contrast enabled the visualization of the two-phase microstructure and in combination with absorption contrast the crack growth was recorded in-situ during fatigue test. In order to obtain the crystallographic orientation of individual grains along the crack path a 3D EBSD volume was recorded subsequently. By combining both techniques it was possible to relate the crystallographic orientation of grains to crack arrest and accelerated crack propagation. It is shown that the lamellar grain orientation and morphology have a great influence on the crack diversion and deviation. Moreover, crack resistance of the alloy is investigated by means of EBSD grain characterisation methodology, orientation and misorientation data evaluations.

Original languageEnglish
Title of host publication12th International Conference on Fracture 2009, ICF-12
Pages254-263
Number of pages10
Publication statusPublished - 2009
Externally publishedYes
EventInternational Conference on Fracture 2009 - Ottawa, ON, Canada
Duration: 12 Jul 200917 Jul 2009
Conference number: 12th

Publication series

Name12th International Conference on Fracture 2009, ICF-12
Volume1

Conference

ConferenceInternational Conference on Fracture 2009
Abbreviated titleICF-12 2009
CountryCanada
CityOttawa, ON
Period12/07/0917/07/09

Keywords

  • EBSD
  • Fatigue
  • Microstructure
  • Titanium alloy
  • X-ray tomography

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