DISLOCATION EMISSION AND EQUATION OFENERGY BARRIERS AT MODEL I CRACK TIP

来源期刊：中国有色金属学报(英文版)1996年第1期

论文作者：Zou Hongcheng Dai Shujuan Liu Furong Hu Xiangyang Li Changchun

文章页码：72 - 76

Key words：emission of dislocation ; propagation of crack ; Peierls-Nabarro dislocation model ; energy barriers ;model I crack

Abstract: The propagation for the model I crack in aluminum single crystal has been directly stud-ied by is-situ TEM observation. The equation of energy harrier of the dislocation building-up and emis-sion at the model I crack tip has been established by means of Peierls-Nabarro dislocation model and starting from angle of energy. By means of calculation, the critical value of spontaneous emission of the dislocations from tip of the model I crack was obtained.