Structural mechanisms of plastic deformation of ceramics

Abstract

The results of short systematization and generalization of literature and the author’s findings of experimental investigation are presented, which indicate the fact that all of the mechanisms of plastic deformation and the peculiarities of its evolution established for metallic materials are fit to those in ceramics including the group of materials on the basis of covalent substances. The data on structure formation in covalent crystals (diamond and diamond-like phases BN, SiC and AlN) at the stage of plastic deformation and relaxation permit one to make a conclusion that for both ceramic and metallic materials structural mechanisms of deformation and tendency to a dynamic recovery depend on the energy of packing defects. Full text download