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File:Iron carbon phase diagram.svg

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Summary

Description
English: 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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Author AG Caesar

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Date/TimeThumbnailDimensionsUserComment
current16:09, 27 February 2019Thumbnail for version as of 16:09, 27 February 2019512 × 355 (399 KB)AG CaesarChanged , to . Fixed wrong numbers
15:34, 27 February 2019Thumbnail for version as of 15:34, 27 February 2019512 × 355 (399 KB)AG CaesarFixed cropping error
13:36, 27 February 2019Thumbnail for version as of 13:36, 27 February 2019512 × 361 (397 KB)AG CaesarUser created page with UploadWizard
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