Is cooling rate important for sub-critical anneal?

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Is cooling rate important for sub-critical anneal?

Postby Alexander B » Wed Jan 10, 2018 12:11 am

With most of my knives, I include a quench as part of my last grain-refining thermal cycle, followed by a 2-hour sub-critical anneal at 1200 F. After the 2-hour soak, should I remove the blades and allow to air cool, or turn of the kiln and leave the blades inside? Or does it not matter?

Apologies if this has been answered in other posts!
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Re: Is cooling rate important for sub-critical anneal?

Postby Kevin R. Cashen » Wed Jan 10, 2018 11:28 am

I am pretty sure that two hours is enough for equilibrium to be reached, cooling rate should be irrelevant.
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