Stacking fault energy, yield stress anomaly, and twinnability of Ni3Al: A first principles study*
Liu Li-Lia), Wu Xiao-Zhi†a),b), Wang Ruia), Li Wei-Guoc), Liu Qing‡b)
       
(a) The free energy as a function of unit cell volume of Ni3Al between 0 and 900 K with a step of 100 K and the values depicted by the red triangles are the equilibrium volumes. (b) The equilibrium volumes of Ni3Al as a function of temperature.