Numerical simulation of deposited behaviours of Al particle on Mg substrate in supersonic particles deposition

J K Yao, X M Wang, Y X Liu

COMPUTER MODELLING & NEW TECHNOLOGIES 2015 19(3D) 7-11

National key Laboratory for Remanufacturing, Academy of Armored Force Engineering, 21 Dujiakan, Beijing, China

ANSYS/LS-DYNA is used to simulate supersonic particles deposition process of Al particle impinging on Mg substrate. Critical velocities of particle at different spraying temperatures and deformation, highest temperatures, stress and strain of particle/substrate are studied. The results show that with the increasing of spraying temperatures, the critical velocities experience a small amplitude decrease. For the two aspects of single particle and two-particle impingements, the highest temperature rises with the increasing of initial temperature and the deformation morphology and stress and strain of particle/substrate vary with/without tamping effect. Upon the effect of tamping, the flatten ratio of pre-deposit particle is bigger than the particle without the tamping effect at the same velocity. The values of maximum stress and strain of two-particle with tamping effect are both higher than single particle impinging. The change gradient of stress without tamping effect is much steeper in comparison of two-particle impinging with the velocity increasing while the change curve tendency of maximum strain is similar to the flatten ratio.