Directional solidification is a kind of additive manufacturing? You're carefully adding to macroscopic crystalline structure at a propagating melt/solid interface.
It kind of is, but it happens within the molten part, so it's harder to control (and, considering how hard, I'd say the science behind it is still poorly understood).
It kind of is, but it happens within the molten part, so it's harder to control (and, considering how hard, I'd say the science behind it is still poorly understood).