Iron carbon phase diagram
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- Läpple, Volker - Wärmebehandlung des Stahls Grundlagen, Verfahren und Werkstoffe 8. Auflage, Seite 55ff.
- Weißbach, Wolfgang - Werkstofkunde Strukturen, Eigenschaften, Prüfung 17. Auflage, Seite 76ff.
- http://www.chemie.de/lexikon/Eisen-Kohlenstoff-Diagramm.html#Darstellung_der_Phasen_im_Eisen-Kohlenstoff-Diagramm
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Iron-carbon phase diagram under atmospheric pressure
This diagram is limited by pure iron on the left and by iron carbide on the right. The mains phases are:
* iron: ferrite, ferritic steel * iron: austenite, austenitic steel * iron carbide: cementite, Fe3C.
We can see a eutectic and a eutectoid; these phases crystallise as a stacking of fine strips of pure phases (iron and cementite) in case of the eutectoid, or a pure iron containing small balls of cementite for the eutectic. Although it is heterogeneous, these phases behave like homogeneous pure bodies.
Steel is between 0 and 2.06 mass percent of carbon. Cast iron is between 2.06 and 6.67%.
Black lines indicate the metastable Fe/Fe3Cphase, red is the stable Fe/Carbon phase
Note that this diagram is for illustrative purposes only, and is not thermodynamically accurate.
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