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Austenite facts for kids

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Iron carbon phase diagram
Iron-carbon phase diagram, showing the conditions under which austenite (γ) is stable in carbon steel.
IronAlfa&IronGamma
Allotropes of iron; alpha iron and gamma iron

Austenite is iron but in a metallic form. It is one of the allotropes of iron, which means its physical form is different from iron but its chemical form is the same. It is named after Sir William Chandler Roberts-Austen (1843–1902).

Austenitization

Austenitization means to heat iron, iron-based metal, or steel to a high temperature. At that temperature, the crystal structure of the metal changes from ferrite to austenite, which can dissolve more carbon.

For some irons, iron-based metals, and steels, the presence of carbides may occur during this austenitization step. The term commonly used for this is two-phase austenitization.

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