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austenite
Sign in to saveAlso known as gamma-phase iron, γ-Fe, gamma iron
thumb|right|250px|Iron-carbon phase diagram, showing the conditions under which austenite (γ) is stable in carbon steel. thumb|Allotropes of iron; alpha iron and gamma iron
~9 min read
Encyclopedic overview
11 sectionsContents
- Allotrope of iron
- Material
- Austempering
- Behavior in plain carbon-steel
- Behavior in cast iron
- Stabilization at lower temperatures
- Thin films
- Transformation and Curie point
- Thermo-optical emission, colour indicates temperature
- See also
- References
thumb|right|250px|Iron-carbon phase diagram, showing the conditions under which austenite (γ) is stable in carbon steel. thumb|Allotropes of iron; alpha iron and gamma iron
Austenite, also known as gamma-phase iron (γ-Fe), is a metallic, non-magnetic allotrope of iron or a solid solution of iron with an alloying element. In plain-carbon steel, austenite exists above the critical eutectoid temperature of 1000 K (727 °C); other alloys of steel have different eutectoid temperatures. The austenite allotrope is named after Sir William Chandler Roberts-Austen (1843–1902). It exists at room temperature in some stainless steels due to the presence of nickel stabilizing the austenite at lower temperatures.
Excerpted from Wikipedia’s “austenite” article, available under the CC BY-SA 4.0 licence.