There have been many discussions about weapons, armour, etc, and a topic that often comes up is metal working, so I thought I'd make a thread to discuss a topic dear to my heart, metallurgy. I'm not a chemist, but metal has been a hobby of mine for years, snd I do have some formal metallurgy education, so I might be able to answer any questions.
Also made the thread because I felt like blabbing a bit about an experiment I'm slowly working on. Using some very brittle (and likely extremely cheap gray cast) cast iron scrap from a burner, I welded a thin strip (~1/8th, maybe 3/16th thick, and a bit under an inch wide, 4 inches long) I cut and partially cleaned (did not grind out pits of rust) to some structural steel (low carbon, the cheap stuff). The goal was to make a fairly hard edge for an axe I'm working on, while still having the bulk of the material still soft and thus not brittle. Well, I did a solid job getting the cadt iron welded on, then added more welds to dilute the VERY soft, brittle cast iron. I have just finished grinding it back down to look axe-like, and curious what the proprrties of the diluted metal are like, I put a very sharp edge on part of it. Then, being the wannabe metallurgist I am and having no tools to test, I checked if the newly made steel was harder than structural. The new edge without a bevel could shave structural steel, without noticeably dulling.
Sounds like I made carbide!
So, pretty hard, especially since this isn't even hardened! Next I'll be using it as an axe, after I carve out a sturdy handle, to test resilience. Just welding that bit of cast is an accomplishment, really. Its prone to cracking pretty badly. And just straight up burning... as in, it burns if you weld it too hot.