Maybe, probably not. It's tough to put a full set of threads on a threadless steerer. I would talk to a framebuilder about threading a steerer, but they tend to buy steer tubes pre-threaded. "Normal" fork dies are usually used to clean up threads- full-on thread cutting dies are pretty rare.

Also, I'd worry about the force of the thread cutting loosening the bond between the steer tube and the rest of the carbon fork. You could get it done and then have the fork come apart later. No bueno...