Need help to understand effects of Hamon and HT

[john orisich]

Hello,
Very new to this forum. I thought I would post to see if there are some good explanations of what may be going on in my current knife build.
Key info:
1095 steel (purchased from Jantz) 5/32" thick
Bevels to 70% before HT
Coated blade with ATP641 antiscale
Used Rutland Black furnace cement
HT done in Evenheat oven with a hold temp of 1470F for 15 min
Quench in Parks 50.
(2) tempering cycles at 400F
Sanding and Etch:
180, 320,400,600,1000,1500,2000,2500 sand sequence. ( i did this twice)
FC etchant

Look at the hamon line and martensitic area around it to the edge. I have lots of stuff going on there.
It does not seem to sand away.
Any thoughts on what going on?

https://www.flickr.com/photos/187672311@N03/49716979251/in/dateposted-public/
https://www.flickr.com/photos/187672311@N03/49717291957/in/dateposted-public/
https://www.flickr.com/photos/187672311@N03/49716438543/in/dateposted-public/

 

[FredyCro]

Alloy or carbon banding. Here is a topic I found on it > https://www.bladesmithsforum.com/index.php?/topic/16612-odd-bandingsegregation-in-aldo’s-1095/

There are others for sure on BF. I remember reading sth about this...

 

[Willie71]

https://www.bladeforums.com/threads/alloy-banding-carbide-segregation.1402268/

 

[john orisich]

Thanks for the links. Its good information.
I did not do any normalizing cycles and based on what I've read normalizing can reduce
this effect. I have two other knives that I have made from the same 1095 stock. I will normalize one of them
and not the other and see what happens.
The effect is really not that unappealing and has some visual interest.
Thanks
John