Theoretical Strength and the Onset of Plasticity in Bulk Metallic Glasses Investigated by Nanoindentation with a Spherical Indenter

作者：Hongbin Bei, Z.P. Lu, E.P. George · 发表于：Physical Review Letters · 年份：2004 · DOI：10.1103/physrevlett.93.125504 · 被引用次数：216 · 研究领域：Metallic Glasses and Amorphous Alloys、High Entropy Alloys Studies、Phase-change materials and chalcogenides

The mechanical behavior of bulk metallic glasses (BMGs) was investigated by nanoindentation with a spherical indenter. The transition from perfectly elastic behavior to plastic deformation was clearly observed as a pop-in event (sudden displacement excursion) on the load-displacement curves. Hertzian stress analysis was used to describe fully the load-displacement behavior during elastic deformation and to determine the theoretical shear strengths of the BMGs.