Irradiation-induced homogeneous plasticity in amorphous/amorphous nanolaminates. (15th November 2020)

• Record Type: Journal Article
• Authors: Huang, L.; Chen, Z.Q.; Huang, P.; Meng, X.K.; Wang, F.
• Is Part Of: Journal of materials science & technology. Volume 57(2020)
• Page Start: 70
• Page End: 77
• Publication Date: 2020-11-15
• Subjects: Metallic glasses -- Ion irradiation -- Plastic deformation -- Nanolaminates -- Interface; Metals -- Periodicals; Materials science -- Periodicals; Materials science; Metals; Periodicals; 620.1105
• DOI: 10.1016/j.jmst.2020.03.050
• Languages: English
• ISSNs: 1005-0302

Abstract

Abstract: 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.