Assuming you are refering to a one piece all wood bow I imagaine it could be done as many static recurves are bent with steam. But, dry heat has proven to be a very effective method to not just bend wood but stiffen the belly wood which reduces set and adds performance. Steam is good, in my opinion, for non working portions of the bow but I prefer dry heat in shaping the working limbs.
If you don't want the scorched look then it can be scrapped and sanded off before finishing.