Image: Iron carbon phase diagram

Description: 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.
Title: Iron carbon phase diagram
Credit: Own work 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
Author: AG Caesar
Usage Terms: Creative Commons Attribution-Share Alike 4.0
License: CC BY-SA 4.0
License Link: https://creativecommons.org/licenses/by-sa/4.0
Attribution Required?: Yes