Grain-size effect on the properties of materials under dynamic deformation

摘要: Some deformation features in fine-grained copper under gradient dynamic stresses are studied which provide a better understanding of the mechanism processes involved. The experimentally observed abrupt change properties materials with grain sizes smaller than certain critical value is shown to be related intergranular slip during deformation. Materials size 5–50 µm found exhibit characteristic nanomaterials strain rate varying from 104 3 · 106 sec−1.