Ok. I guess It's hard to narrow it down, but I suppose I would like to have a better understanding of exactly how the different alloying elements act in an alloy, why exactly they behave like they do. I have a minimal understanding, and it's more like what the end result of what the elements do in alloy, and less of an exact understanding of why.
Then I would also like to have a better understanding, of I guess mechanical metallurgy, and maybe something along the lines of structural engineering (idk if that's exactly what I'm looking for, but something along the lines of how to design a strong shape, that's also able to be thin enough for a knife, and have an exact understanding of why something is structurally sound).