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When steel =Austenite structure

When steel =Austenite structure

When steel =Austenite structure

(OP)
How can we tell if steel has an austenite stucture?

RE: When steel =Austenite structure

Microscopic examination of an etched sample coupled with the chemical composition.

Regards,

Cory

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RE: When steel =Austenite structure

See if it attracts a magnet.

RE: When steel =Austenite structure

Why do you need to know?

RE: When steel =Austenite structure

Do you know the alloy?  If yes, the microstructure is probably also known.

Also, the previous question [why do you need to know] seems valid, if nothing else to provide perspective.  

RE: When steel =Austenite structure

Hi.

If this helps, the structure of austenite is characterized by a "face-centered cubic lattice."

Like the others say, just see if the metal is magnetic.  Austenite, by definition, is a non-magnetic solid solution of carbon or ferric carbide in gamma iron.  

Mostly unstable below its critical temperature, austenite can be obtained from high carbon steels by rapid quenching from high temperatures.  Or it can be obtained at room temperature, lower carbon steel, by adding nickel or manganese.

Known for its enhanced resistance to corrosion, austenite can exist in low or high carbon/nickel-chromium, or when manganese reaches 14% with either nickel-chromium or small percentages of nickel or molybdenum.

If you believe surface treatments may also help, just see:
<a href="http://www.industrialcoatingsworld.com/Corrosion-Resistant-Coatings/index.html">Corrosion Resistant Coatings</a>

Good luck!






  

William Gunnar
http://www.IndustrialCoatingsWorld.com
 

RE: When steel =Austenite structure

1. Check your sample with XRD analysis.
2. There is also etchants for showing retained austenite in steels.

Henrik

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