Friction Forged Knives - Metallurgy of Diamonblade Knives

[Larrin]

New article about "Friction Forged" knives which are produced by Diamondblade Knives using a process called Friction Stir Processing. A review of the studies on FSP with tool steel and what the properties likely are for the Friction Forged D2. https://knifesteelnerds.com/2020/02/03/friction-forged-knives-diamondblade-friction-stir-processing/

 

[navman]

Literally (like yesterday) just watched an episode of "How It's Made" about these knives and thought it would be cool if you did an in depth article about it.

Awesome work!

 

[Larrin]

Literally (like yesterday) just watched an episode of "How It's Made" about these knives and thought it would be cool if you did an in depth article about it.

Awesome work!

I didn't even know about that episode. I will have to look it up.

Edit: It is available here: https://www.diamondbladeknives.com/Videos

 

[OrangeBlueOrangeBlue]

Does the ability to deferentially harden using this process have any utility for other knife steels?

 

[Larrin]

Does the ability to deferentially harden using this process have any utility for other knife steels?

Yes, it should be possible.

 

[rxavage]

So pretty much nothing new here

 

[dirc]

I'd still like to see something really tough like aeb-l get this treatment, but done by Larrin instead of a 3rd party/corp

 

[knarfeng]

There were a number of threads about the process posted in 2007. I don't remember hearing much subsequent to that. If memory serves, one of the developers of the process participated in at least one of the threads. I think it was the CATRA testing thread started by Cliff Stamp. :
https://www.bladeforums.com/threads/friction-forged-blades-anybody-tested-one.473537/

https://www.bladeforums.com/threads/friction-forged-blades-catra-tests.476782/

https://www.bladeforums.com/threads/friction-forged-test-blade.480424/

https://www.bladeforums.com/threads/diamondblade-friction-forged-d2-photos.480678/

 

[Larrin]

There were a number of threads about the process posted in 2007. I don't remember hearing much subsequent to that. If memory serves, one of the developers of the process participated in at least one of the threads. I think it was the CATRA testing thread started by Cliff Stamp. :
https://www.bladeforums.com/threads/friction-forged-blades-anybody-tested-one.473537/

https://www.bladeforums.com/threads/friction-forged-blades-catra-tests.476782/

https://www.bladeforums.com/threads/friction-forged-test-blade.480424/

https://www.bladeforums.com/threads/diamondblade-friction-forged-d2-photos.480678/

Yes I cited the thread where Phil posted his testing results.

 

[me2]

I tried one of Cliff's blades years ago. It was too thick for a small blade so I didn't have a good impression of the knife as a whole. It would probably be quite different if it had been ground to less than 0.03" behind the edge.