Study on Internal Crack Model in Metallic Material Based on CA Method
According to the importance of internal defects(void/crack) controlling and forecasting in metal material and the current research situation of crack healing work,the common preparation methods for inner cracks in reparative research process were reviewed.In view of the deficiency of the current crack healing simulation research work,it shows the difference between molecular dynamics method and cellular automaton(CA) method.In the CA model based on 2D mesoscopic scale,new ideas and directions of how to simulate defects healing in metallic materials were proposed.Based on Microsoft Visual C++ programming platform,three different forms of internal cracks under the condition of CA model(microcracks in grain、intergranular microcracks、transgranular microcracks) were set up.The transgranular crack healing process under dynamic recrystallization conditions was furtherly simulated,and a reasonable theory repairing results can be obtained.