Acting as a barrier for the movement of dislocations, twin boudaries can improve strength of alloys. If this is true for most of the alloys, seems finding a way to put more twins into one grain is a way for strengthening, if it could be done. Here comes my questions: (1) how many twins can be pumped into one grain in real work no mater what kind of metal it is; (2) Is there a theory on this
Any direct answer or link is appreciated.