Irradiation-induced homogeneous plasticity in amorphous/amorphous nanolaminates  

作　　者：L.Huang Z.Q.Chen P.Huang X.K.Meng F.Wang 

机构地区：[1]State Key Laboratory for Mechanical Behavior of Material,School of Materials Science and Engineering,Xi'an Jiaotong University,Xi'an,710049,China [2]Institute of Materials Engineering,National Laboratory of Solid State Microstructures,Collaborative Innovation Center of Advanced Microstructures,Nanjing University,Nanjing 210023,China [3]State Key Laboratory for Strength and Vibration of Mechanical Structures,School of Aerospace Engineering,Xi'an Jiaotong University,Xi'an,710049,China

出　　处：《Journal of Materials Science & Technology》2020年第22期70-77,共8页材料科学技术（英文版）

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)。

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.

关 键 词：Metallic glasses Ion irradiation Plastic deformation NANOLAMINATES Interface 

分 类 号：TG139.8[一般工业技术—材料科学与工程]