Erosion Behavior of Ti-6Al-4V Alloy Based on Finite Element Method

A finite element model for the erosion of Ti-6Al-4V alloy by sharp particles was established. The erosion process of Ti-6Al-4V alloy and the variation of erosion rate at different erosion angles and erosion rates were analyzed by Johnson-Cook plasticity and failure criterion. The results showed that the particles were subjected to cutting and pressing on the Ti-6Al-4V alloy at a low impact angle (30°). The erosion rate increased first and then decreased with the increase of the erosion angle, showing the most serious wear at 30°, and increased exponentially with the increase of the erosion rate. In addition, the variation of the equivalent stress peak with the erosion angle could also reflect the severity of the erosion.