Effects of Crystal Orientation on the Cutting Mechanism of Aluninum Single Crystal

In order to study the effect of material anisotropy on the cutting mechanism, orthogonal cutting test was carried out using test pieces of aluninum single crystal of various orientations. The results are as follows : i) There is good agreement between the angle of slip 1ines observed on the side surface of the machined test piece and the one theoretically calculated from the active slip system. ii) It i s made clear that the shear angle in cutting of single crystal can be estimated reasonably from the active slip system of crystal. iii) The expectation of shear angle in polycrystal which has a distinctive preferred orientation can be also theoretically calculated on the basis of that in single crystal. iv) Process of shearing deformation is examined in detai 1 by observing slip line in shear zone.