Years ago they sold dropped tie rods that were designed to clear transplanted engines oil pans in cars like 50 Fords, and they were welded, so if done properly it can be done. I agree about finding some solid stock the right OD to slip inside first (make it as long as will fit into the hollow cut off tie rod both ways past the cut), rosette weld it in place along it's length, then lay in a deep hot weld all around the beveled cut. If you wanted to be extra sure you could slip one more piece of tubing OVER the beveled weld (after you grind it level) then weld that sleeve fully to an area extending out over the cut. With all those pieces of tubing and solid stock, the cut area would be stronger than the original uncut piece IMO.

Don