Molecular Dynamics Analysis of Elasto-plastic Deformation of Ni3Al Intermetallic Compound by HVI

In the aircraft gas turbine, a projectile collision damage blades. In present study, the collision between Ni3Al intermetallic compounds is simulated by molecular dynamics method with two same mass bodies model. The collision caused shock wave propagates as a plane wave. The purpose of present study is to clarify the dynamics of propagating shock waves as elastic waves in Ni3Al and the microstructural change of Ni3Al under high-speed elasto-plastic deformation. Strain in Ni3Al does not strongly depends on the temperature. At the collision with 2000 m/s relative velocity, the system fractures under tensile strain state a little late after the collision. After the shock wave passes through, the strain becomes zero. The shock wave affects the mechanical and thermodynamical properties.