Micrograph Library
Browse the libraryAdvanced searchSystemsCompositionsTechniquesKeywordsPhase diagramsHelpPreferencesAbout the micrograph libraryTerms of useContribute micrographs!FeedbackLinksCredits Print this page

Full Record for Micrograph 780
- Micrograph no
- 780
- Brief description
- Heat treated spheroidal graphite cast iron
- Keywords
- alloy
, annealing
, carbon, cast iron
, decarburisation
, ductile
, ferrite
, graphite
, grey cast iron
, heat treatment
, iron, magnesium, metal, pearlite
, silicon
- Categories
- Metal or alloy
- System
- Fe-C-X
- Composition
- Fe, C 3.2, Si 2.5, Mg 0.05 (wt%)
- Standard codes
- Reaction
- Processing
- Heat treated
- Applications
- Sample preparation
- Etchant: Nital 2%
- Technique
- Reflected light microscopy
- Length bar
- 100 μm
- Further information
- Spheroidal graphite cast iron usually has a pearlitic matrix. However, annealing causes the carbon in the pearlite to precipitate on to the existing graphite or to form further small graphite particles, leaving behind a ferritic matrix. This gives the iron even greater ductility. The micrograph shows graphite nodules in a ferritic matrix.
Source: http://www.msm.cam.ac.uk/phase-trans/2001/adi/cast.iron.html. - Contributor
- Dr M A Yescas-Gonzalez
- Organisation
- Department of Materials Science and Metallurgy, University of Cambridge
- Date
- 18/07/03
- Licence for re-use
DoITPoMS standard terms of use
- Related micrographs