Supermodulus effect by grain-boundary wetting in nanostructured multilayers

作     者：Jing Wang Lu Han Xiaohu Li Dongguang Liu Laima Luo Yuan Huang Yongchang Liu Zumin Wang Jing wang;Lu Han;Xiaohu Li;Dongguang Liu;Laima Luo;Yuan Huang;Yongchang Liu;Zumin Wang

作者机构：State Key Lab of Hydraulic Engineering Simulation and SafetySchool of Materials Science and EngineeringTianjin UniversityTianjin 300350China German Engineering Materials Centre at MLZHelmholtz-Zentrum GeestachtD-85747 GarchingGermany Institute of Industry and Equipment TechnologyHefei University of TechnologyHefei 230009China School of Materials Science and EngineeringHefei University of TechnologyHefei 230009China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2021年第65卷第6期

页      面：202-209页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by the National Key Research and Development Program of China(No.2017YFE0302600 and No.2017YFB0701801) 

主　　题：Multilayer Elastic modulus Grain-boundary wetting Stress Thermodynamic calculation 

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 *** 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/*** GB wetting phenomenon was further supported by a thermodynamic *** 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.