3-D Analysis of Graphite Nodules in Ductile Cast Iron Using FIB-SEM

Luca D'Angelo, Freja N. Jespersen, A. Nicole MacDonald, Alice Bastos da Silva Fanta, Andy Horsewell, Niels Skat Tiedje

Research output: Contribution to conferenceConference abstract for conferenceResearch


Ductile cast iron samples were analysed in a Focused Ion Beam Scanning Electron Microscope, FIB-SEM. The focussed ion beam was used to carefully remove layers of the graphite nodules to reveal internal structures in the nodules. The sample preparation and milling procedure for sectioning graphite nodules is described and ef-fects of preparation methods discussed. It was found that nodules contain different types of inclusions. These were analysed for chemical composition and crystallography using energy dispersive spectrometry (EDS) and electron back-scatter patterns (EBSP). Location of inclusions inside the nodules, their orientation in relation to the graphite and the chemistry of the inclusions is analysed and described. Formation of the structures during solidification and subsequent cooling to room temperature is discussed.
Original languageEnglish
Publication date2009
Publication statusPublished - 2009
EventEuropean Congress on Advanced Materials and Processes 2009 - Glasgow, United Kingdom
Duration: 7 Sep 200910 Sep 2009


ConferenceEuropean Congress on Advanced Materials and Processes 2009
Country/TerritoryUnited Kingdom
Internet address


  • Ductile iron
  • Focussed ion beam
  • Solidification
  • Inclusions
  • Scanning electron microscope


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