1084 grain size trouble

[DevinT]

Any chance these were overheated during forging?

Hoss

 

[Tony Mont]

Again, I'd like to thank everyone chiming in, I reall appreciate it.

Yep, that spider pattern does look neat - I hope somebody can chime in what it's all about. What about those "dimples" that look like where you might have used a drill to "dimple" a few places? What are those?

After your last trial, I'd be tempted to give up on that batch of steel. I hope you don't have lots of it?

The dimples are center punches to make sure I do not mix up the coupons. Luckily, I only got two 3 feet bars.

I'm sorry. I didn't realize the knife was forged, otherwise I would never have suggested the 1900°F normalizing heat. Your forging for sure broke up any possible heavy spheroidizing.

I just looked at your OP and saw that you mentioned it was forged. Doh! My bad!

No need to apologise my friend, you meant good and that's all that matters. Also, a second test in a more controlled manner never hurt anyone.

Any chance these were overheated during forging?

Hoss

Since I'm new to forging, the blade could definitely had this happen. Not very likely because I forge with an induction forge and the coil I used on this knife would not reach those temperatures. But since I do not have the knowledge to guarantee otherwise, I'd say it's a possibility.
All the coupons were cut from a fresh bar in case I had compromised somehow the first one with my forging.