The anisotropy of deformation behaviors of MgF2 single crystal

Anisotropy of deformation behaviors limit the high surface quality of Magnesium fluoride (MgF2) components. Cleavage factor have the relationship with the anisotropy of deformation behaviors of Magnesium fluoride (MgF2) single crystal, which can influence the manufacturing efficacy and component quality. To determine the reveal anisotropy mechanism of deformation behaviors of the MgF2 single crystal, the nanoindentation tests were systematically performed on different crystal planes. Besides, the hardness, displacement-load curves,the SEM images of the surface morphologies and cleavage factors under different experimental conditions were obtained. According to compared the experiment results and the cleavage factors under different experimental conditions, the cleavage factor can be used to reflect the activation of the plastic deformation and reveals the anisotropy of deformation behaviors. The theoretical results consisted well with the experimental results, which can improve the manufacturing efficacy and component quality in the manufacturing process of the MgF2 components.