Austempering

Joined
Oct 3, 1998
Messages
115
Hello All,

Snickersnee brought this up in another thread and I was wondering what other experiences/opinions where out there regarding this method of heat treatment.

Thanks

Spencer
 
In all honesty, you won't get a blade that's gonna have quite as much wear resistance as a martempered or quenched and drawn piece. It's close, but not quite equal. The upside is that bainite is very tough, as this process forms no brittle martensite, it is much more resistant to cracking. The process also results in little warping, as the quenching is done in graduations and over a period of time.

This yields a wonderfuly impact resistant and flexible blade. Being that I'm not anal about edge retention, especialy considering it's very close, but I am anal about having a tough knife, this is my prefered process.

Some people say a knife is for cutting so you need a real hard one so it holds an edge forever. I say a knife is for when I need to cut something, and it does me no good if it's broken.

Anyway, as stated above, this process really shines when dealing with long blades, as they will naturaly build up high stress levels. That's why real hard swords are a bad idea. In little blades, especialy folders, the advantages are minimal.

I meant to get my recipe for doing up high carbon steel this way, but I lost it so I have to go grab it from the local tradeschool's library, I should get it posted Monday/Tuesday for anyone who's intrested.
 
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