基于微观结构非均匀性的非晶合金力学行为

The intrinsic structural heterogeneities of amorphous alloys are closely related to the thermodynamics and dynamical behavior, such as relaxation/crystallization, glass transition phenomenon and plastic deformation. However, the structural information is submerged into the meta-stable disordered long-range structure, which made it very difficult to explore the structural heterogeneities of amorphous alloys. Specificlly, the correlation between the microstructural heterogeneity and mechanical properties of amorphous alloys is one of important scientific issues. The current paper reviews the structural heterogeneity of dynamics into the amorphous alloys from the time-scale point of view and inspected the relaxation of structure with various spatial scales. From the perspective of experimental results, theoretical analysis and numerical simulations, the correlation between heterogeneous structure and the dynamic relaxations, deformation mechanisms, mechanical properties and dynamic characteristics were discussed. Finally, we discuss the further development of structural heterogeneity of amorphous alloys.