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The effect of aluminium content on morphology, size, volume fraction, and number of graphite nodules in ductile cast iron

Shayesteh Zeraati, A ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1243/14644207JMDA302
  3. Abstract:
  4. The effect of aluminium content on the formation mechanism, volume fraction, morphology, and particle size distribution of graphite has been investigated. Addition of aluminium to ductile iron causes some fundamental changes in iron-carbon phase diagrams and, as a result, improves graphite formation during eutectic transformation. Results reveal that aluminium compounds have been formed in the core of graphite nodules; thus aluminium plays an important role in the formation of graphite nodules. Furthermore, it is indicated that an increase in the aluminium content also leads to an increase in the number of graphite nodules and a decrease in the nodule size. By using electron probe microanalysis, the segregation of aluminium and silicon between graphite nodules has been studied
  5. Keywords:
  6. Casting ; Microscopy ; Phase transformation ; Precipitation ; Aluminium content ; Carbon phase ; Ductile cast irons ; Ductile iron ; Eutectic transformation ; Formation mechanism ; Fundamental changes ; Graphite formation ; Graphite nodules ; Aluminum compounds ; Cast iron ; Electron probe microanalysis ; Graphite ; Morphology ; Nucleation ; Phase diagrams ; Titration ; Aluminum
  7. Source: Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications ; Volume 224, Issue 3 , 2010 , Pages 117-122 ; 14644207 (ISSN)
  8. URL: http://journals.sagepub.com/doi/abs/10.1243/14644207JMDA302