totally confused, whats your opinion ????

Hello All
The reason that multiple annealing works is as follows.
Upon quenching you do not get 100% transformatiom to martinsite.The first temper atep tempers this martinsite.After this step the steel is still changing and more untempered martinsite forms .Although not very much it still is brittle and the second tempering releaves this.
This process of martinsite formatiom continues but at a rapidly dimminishing rate. I have read a study rhat was done on some swords made over 200 years ago that still are transforming untempered martinsite . This effect was extremly small but was measurable.I don't know the exact numbers but would guess 90% transformation after your final quench,temper this and wait for more to form and temper this and so on.This is the bases for cyro treatment. The extreme cold drives this process to completion. NOTE it is nearly impossible to get 100% transformation .
Thanks
Rex
 
Silent: I did not mean to ignore your thoughts, I appreciate your contribution. When folks claim the multi phase cycles are 'hogwash', ask them how they test their knives, Do they do any compariason testing and have they tried it and on what steel. Who knows? We may learn something from their response to such questions.
 
TLM: I have been exploring in the site you posted. I found it very interesting, but will have to get Rex to explain what I want to know. It sounds like the old wootz kind of stuff, the presence of martensite may provide some opportunitits for knife. Thanks for sharing the information. Sorry it took me so long to respond, I wanted to understand what I thought I was reading. It would be fun to invite him to make some knives.
 
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