File:Steel pd.svg
Summary
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 : <a href="https://en.wikipedia.org/wiki/User:User_A1" class="extiw" title="en:User:User A1">en:User:User A1</a>
Original Author : Christophe Dang Ngoc Chan
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 14:33, 3 January 2017 | | 420 × 380 (336 KB) | 127.0.0.1 (talk) | Steel phase diagram <p>Iron-carbon phase diagram under atmospheric pressure </p> <p>This diagram is limited by pure iron on the left and by iron carbide on the right. The mains phases are: </p> <pre> * α iron: ferrite, ferritic steel * γ iron: austenite, austenitic steel * iron carbide: cementite, Fe3C. </pre> <p>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. </p> <p>Steel is between 0 and 2.06 mass percent of carbon. Cast iron is between 2.06 and 6.67%. </p> <p>Note that this diagram is for illustrative purposes only, and is not thermodynamically accurate. </p> <p>SVG Author : <a href="https://en.wikipedia.org/wiki/User:User_A1" class="extiw" title="en:User:User A1">en:User:User A1</a> </p> Original Author : Christophe Dang Ngoc Chan |
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