Image:Steel pd.svg
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Steel phase diagram
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:
* α iron: ferrite, ferritic steel * γ 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%.
Note that this diagram is for illustrative purposes only, and is not thermodynamically accurate.
SVG Author : User:User A1 Original Author : Christophe Dang Ngoc Chan
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. |
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| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 11:13, 6 December 2007 | 420×380 (336 KB) | User A1 (Talk | contribs) | (Steel phase diagram 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: * α iron: ferrite, ferritic steel * γ iron: austenite, austeniti) |
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