Shock-induced migration of asymmetry tilt grain boundary in iron bicrystal: A case study of Σ3 [110] Project supported by the Fundamental Research for the Central Universities of China, the National Key Laboratory Project of Shock Wave and Detonation Physics of China, the Science and Technology Foundation of National Key Laboratory of Shock Wave and Detonation Physics of China, the National Key R&D Program of China (Grant No. 2017YFB0202303), the National Natural Science Foundation of China (Grant Nos. 51871094, 51871095, 51571088, NSFC-NSAF U1530151, and U1830138), the Natural Science Foundation of Hunan Province of China (Grant No. 2018JJ2036), and the Science Challenge Project of China (Grant No. TZ2016001). |
(a) Evolution of GB migration velocity with different piston velocities. (b) The velocity of atoms along Z direction and the micro-morphology of the bicrystal with up = 0.6 km/s at about 25 ps. The color code is the same as Fig. |