You shouldn't see any layers with crucible steel - it's high quality cast steel that's then taken and rolled or forged to refine the grain and get the carbides (Through later normalization and hardening) where they're wanted in the grain and get good microstructure.I was looking into 'Crucible' steel the other night. Mainly down to sudden thought/boredom.
I was wondering if the blades in some of my older planes that have Finest Crucible Steel stamped on them would display the patternation often seen on Damascus or Wootz steels.And if treating the blades with light acids like acetic would bring it out. But I'm not sure as I think its down to the cooling process rather than just the steel itself, and those steels are different in their make up, and also the original recipe is something thats been lost
My understanding of the pattern, and my apologies for having never had too much interest in this (I know how the modern patterned steel is made by just layering and pattern welding different alloys, but not necessarily homogenizing them)...anyway, my understanding is originally, the layering was done to remove contaminants, and if there was an addition of carbon at that point, it would've been done then.
Prior to fast steelmaking, I'm guessing that a lot of the alloying was determined by getting good ore, and some of the better steel had natural alloying elements in the ore. For example, nickel will improve steel somewhat (how much for different attributes, I don't know) and probably improve hardenability. Chromium and manganese obviously will, and small amounts of vanadium will, too, and a little silica. Whether or not larger amounts of those does is up to the preference of the user (I don't like free vanadium carbides, but knife guys looking for maximum wear resistance with minimum carbide volume seem to love vanadium carbides and will probably soon love niobium).
Long story short, the only patterning you should see in any steel made in the last 250 years will be intentional pattern welding with alloys like 15n20 and 1095 in combination. These can make very good billets, but not better than good uniform steel (which is what the crucible steel would've been).