“…Though TiAl is highly appealing [1][2][3] for aerospace and automotive heat engine applications that require low density materials with high temperature strength, ambient-temperature toughness, and good corrosion resistance, the variability in the rather low ductility of TiAl has slowed its introduction into heat engines [4][5][6][7][8][9][10]. The high variability in ductility arises from the fact that there are a limited number of facile slip systems.…”