Effect of streamlined laser texture on friction and wear properties of Ti6Al4V alloy
Ti6Al4V alloy has become the preferred material for key components in machinery due to its many ex-cellent mechanical properties,however,the defects of Ti6Al4V alloy such as low hardness and poor wear resist-ance limit its wider application in the mechanical field.In view of this,the laser texture technology was used to prepare a streamlined symmetrical texture on the surface of Ti6Al4V alloy,and the effects of laser streamline texture with different parameters on the wear resistance of Ti6Al4V alloy material were studied by friction test system under oil lubrication conditions.SEM and LICHEN electronic balance equipment were used to character-ize the wear scar morphology and wear amount on different sample surfaces.The experimental results show that when the texture length is 400 μm and the depth is 600 µm,the friction coefficient and wear of the sample are smaller,and the friction reduction effect is better.In addition,ANSYS Workbench software was used to simu-late the flow characteristics of lubricating oil on the texture surface,and it was found that the decrease of fric-tion coefficient in the experiment was mainly caused by the increase of oil film pressure caused by the change of flow velocity and flow direction of lubricating oil under the action of texture.The increase of oil film pressure can improve the bearing capacity of the oil film and effectively reduce the friction coefficient of the friction pair.
万方数据
维普
