典型文献
Fabricating polymer/HEA-hybrid topological lattice structure for enhanced mechanical properties
文献摘要：
Metamaterials such as architected lattice structures have aroused broad interest in being applied as mechanical supports for their lightweight and custom-shaped capabilities.Although various prior efforts have been devoted,a multiscale fabrication of micro-nano lattice structures without penalizing the mechanical proper-ties is still a challenging but highly desirable task.Here we put forward a strategy to produce a mechanically enhanced micro-nano lattice structure by conformally depositing a CoCrFeNiTi high-entropy alloy(HEA)coating layer onto a three-dimensional(3D)printed polymer skeleton.The template for the 3D printing employs a six-membered tricapped trigonal prism(6M-TTP)structure derived from a medium-range order structure motif in amorphous alloys.The topological complexity of the 6M-TTP can substantially avoid the stress concentration by offering stress-release channels,while the HEA film incorporating with amorphous and nanocrystalline constituents can further reinforce the lattice architecture through its size hardening effect.Benefitting from the above,the fabricated polymer/HEA-hybrid lattice exhibits a high specific compressive strength(～0.055 MPa kg1 m3 at a density below 500 kg m-3),a superior elastic recoverability(～70％recovery rate under＞30％compression),an enhanced plasticity(40％strain)and a high specific modulus(0.135 MPa kg-1 m3).Our strategy initiates a perspective way to fabricate multiscale micro-nano lattice structures with improved mechanical properties,which could be extended to widespread metamaterial research.
文献关键词：
中图分类号：
作者姓名：
Wentao Zhang;Zhongzheng Yao;Sihan Zhang;Sinan Liu;Huiqiang Ying;Jiacheng Ge;Shu Fu;Yu Lou;Xiang Li;Zhenduo Wu;He Zhu;Shuangqin Chen;Si Lan
作者机构：
Herbert Gleiter Institute of Nanoscience,School of Materials Science and Engineering,Nanjing University of Science and Technology,Nanjing,210094,China;School of Sciences,Nanjing University of Science and Technology,Nanjing,210094,China;Center for Neutron Scattering and Physics Department,City University of Hong Kong Dongguan Research Institute,Dongguan,523000,China;Shenzhen Research Institute,City University of Hong Kong,Shenzhen,518057,China
文献出处：
引用格式：
[1]Wentao Zhang;Zhongzheng Yao;Sihan Zhang;Sinan Liu;Huiqiang Ying;Jiacheng Ge;Shu Fu;Yu Lou;Xiang Li;Zhenduo Wu;He Zhu;Shuangqin Chen;Si Lan-.Fabricating polymer/HEA-hybrid topological lattice structure for enhanced mechanical properties)[J].自然科学进展·国际材料（英文）,2022(06):800-805
A类：
architected,penalizing,CoCrFeNiTi,tricapped
B类：
Fabricating,polymer,HEA,hybrid,topological,lattice,enhanced,properties,Metamaterials,such,structures,have,aroused,broad,interest,being,applied,supports,their,lightweight,custom,shaped,capabilities,Although,various,prior,efforts,been,devoted,multiscale,fabrication,micro,without,still,challenging,but,highly,desirable,task,Here,put,forward,strategy,produce,mechanically,by,conformally,depositing,entropy,coating,layer,onto,three,dimensional,printed,skeleton,template,printing,employs,six,membered,trigonal,prism,6M,TTP,derived,from,medium,range,order,motif,amorphous,alloys,complexity,can,substantially,avoid,stress,concentration,offering,release,channels,while,film,incorporating,nanocrystalline,constituents,further,reinforce,architecture,through,size,hardening,effect,Benefitting,above,fabricated,exhibits,specific,compressive,strength,kg1,density,below,superior,elastic,recoverability,recovery,under,compression,plasticity,strain,modulus,Our,initiates,perspective,way,improved,which,could,extended,widespread,metamaterial,research
AB值：
0.628856
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