5/8/2023 0 Comments Pureraw crack![]() Finally, the significant role of external defects (e.g., notches) on shear banding behavior is described and a “defect engineering” strategy for tailoring the mechanical properties of MGs is proposed. The effect of sample size on competition between shearing and splitting for brittle MGs is also discussed. ![]() Furthermore, the fragmentation in brittle MGs under compression should be caused by split cracking from defects. Under cyclic loading, the shear band-mediated fatigue crack initiation and cracking mechanisms are confirmed. It is found that the "cold" fracture of shear band can occur when reducing sample size, adding external confinement, or decreasing the testing temperature to stabilize the shear band propagation. The experimental evidence of progressive shear band propagation under uniaxial loading is provided and the mechanisms of shear band cracking under compression are revealed. In this paper, based on the previous studies of shear banding behaviors in various MGs, the mechanisms of shear band propagation, cracking, and unstable fracture under monotonic and cyclic loadings are elucidated. ![]() The shear banding behavior is of vital importance for understanding and improving mechanical properties of MGs therefore, studies on shear bands have been long-standing hot topics in the MG field. g., strength, plasticity, fracture toughness, fatigue properties, etc.). The shear banding behavior dominates the deformation and fracture mechanisms of MGs and affects their mechanical properties (e. Plastic deformation of metallic glasses (MGs) at room temperature usually localizes into shear bands.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |