• 文献标题:   Strengthening metal nanolaminates under shock compression through dual effect of strong and weak graphene interface
  • 文献类型:   Article
  • 作  者:   LIU XY, WANG FC, WU HA, WANG WQ
  • 作者关键词:  
  • 出版物名称:   APPLIED PHYSICS LETTERS
  • ISSN:   0003-6951 EI 1077-3118
  • 通讯作者地址:   Univ Sci Technol China
  • 被引频次:   26
  • DOI:   10.1063/1.4882085
  • 出版年:   2014

▎ 摘  要

We use molecular dynamics method to study the strengthening effect of graphene-metal nanolayered composites under shock loading. The graphene interfaces have the advantages of both strong and weak interfacial features simultaneously, which solves a strengthening paradox of interfacial structures. On one hand, the weak bending stiffness of graphene leads to interlayer reflections and weakening the shock wave. On the other hand, the strong in-plane sp(2)-bonded structures constrain the dislocations and heal the material. The elastic recovery due to graphene interfacial constraints plays an important role in the strengthening effect, and the shock strength can be enhanced by decreasing the interlayer distance. This interface with strong/weak duality should lead to an improved fundamental understanding on the dynamic mechanism of composites with interfacial structures. (C) 2014 AIP Publishing LLC.