摘要
Achieving homogeneous plastic deformation in metallic glasses is a long-standing goal yet to be solved in materials science. Here we investigate the effect of ion irradiation on the plastic deformation behavior of ZrCu/ZrCuNiAlSi amorphous/amorphous nanolaminates(A/ANLs) via nanoindentation testing. The experimental results indicate a dramatic change in deformation mode from multiple shear banding events to homogeneous compressive deformation before and after ion irradiation on the A/ANLs in the areas underneath the indenter. Ion irradiation-induced changes of both fraction and distribution of free volume inside each constituent layer and interfacial state in the A/ANLs may be responsible for the unusual homogeneous deformation behavior. Our results suggest that the mechanical property of A/ANLs could be modified by tuning both the inner and interfacial structure via ion irradiation.
基金
financial support from the National Natural Science Foundation of China (No. 51471131)
the Natural Science Foundation of Shaanxi Province (No. 2019TD-020)
National Science Basic Research Plan in shaanxi Province of China (No. 2020JM-41)
financial support from the Fundamental Research Funds for the Central Universities (No. 021314380118)
the Natural Science Foundation of Jiangsu Province, China (No. BK20180266)
financial support from Fundamental Research Funds for the Central Universities
National Science Basic Research Plan in shaanxi Province of China (No. 2020JM-33)。
