Supermodulus effect by grain-boundary wetting in nanostructured multilayers

被引：3

作者：

Jing Wang ^{[1
]}

Lu Han ^{[1
]}

Xiaohu Li ^{[2
]}

Dongguang Liu ^{[3
]}

Laima Luo ^{[4
]}

Yuan Huang ^{[1
]}

Yongchang Liu ^{[1
]}

Zumin Wang ^{[1
]}

机构：

[1] State Key Lab of Hydraulic Engineering Simulation and Safety, School of Materials Science and Engineering, Tianjin University

[2] German Engineering Materials Centre at MLZ, Helmholtz-Zentrum Geestacht

[3] Institute of Industry and Equipment Technology, Hefei University of Technology

[4] School of Materials Science and Engineering, Hefei University of Technology

来源：

JournalofMaterialsScience&Technology | 2021年 / 65卷 / 06期

关键词：

D O I：

暂无

中图分类号：

TB383.1 [];

学科分类号：

070205 ; 080501 ; 1406 ;

摘要：

The effect of thermal treatments on mechanical properties was systematically investigated in Ni/Mo multilayers with a constant modulation period(160 nm) prepared by magnetron sputtering deposition.A supermodulus effect was found in the annealed multilayers as compared to the as-deposited state. A large tensile stress development was observed in the multilayers. The evolution of grain-boundary(GB)wetting was observed at the interfaces of the multilayers, which results in an enhanced modulus based on the mechanism of GB-wetting-induced interfacial stress/strain. The GB wetting phenomenon was further supported by a thermodynamic calculation. The results not only bring clear evidence of the important role of interfacial structures in governing the elastic behavior of metallic multilayers, but also allow designing the multilayers with special properties through atomic diffusion and wetting at the interfaces based on the thermodynamic calculation.

引用

页码：202 / 209

页数：8

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