文章信息/Info

Title:

Strengthening and Toughening of Graphene-Reinforced Metal Matrix Composites

作者:

郭強; 趙蕾; 李贊; 李志強; 熊定邦; 張荻

（上海交通大學 金屬基復合材料國家重點實驗室，上海 200240）

Author(s):

GUO Qiang;  ZHAO Lei;  LI Zan;  LI Zhiqiang;  XIONG Dingbang;  ZHANG Di

(State Key Lab of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China)

關鍵詞:

金屬基復合材料; 石墨烯; 力學行為; 強韌化; 變形機理

Keywords:

metal matrix composite;  graphene;  mechanical behavior;  strengthening and toughening;  deformation mechanism

DOI:

10.7502/j.issn.1674-3962.2019.03.02

文獻標志碼:

A

摘要:

石墨烯材料以其優異的本征力學性能，被認為是新一代金屬基復合材料中理想的增強體。特別是，由于調控石墨烯內稟缺陷的種類和含量可以較為簡便地實現對其本征力學性能的精確“剪裁”，使得石墨烯增強金屬基復合材料具有廣闊的發展空間。綜述了近年來石墨烯增強金屬基復合材料制備工藝與結構-性能關系的研究進展，并聚焦于石墨烯/金屬之間界面的結構與性能。這不僅是因為在復合材料使役時，外加載荷是通過復合界面傳遞到石墨烯增強體的（即“承載效應”），也因為隨著石墨烯的加入，在復合材料變形過程中石墨烯和金屬基體內的位錯發生復雜的相互作用，改變或影響了基體的變形機制，導致了額外的強韌化效果。最后，展望了石墨烯增強金屬基復合材料的發展趨勢，指出需要發展宏量制備工藝，并深入研究實際使役條件下復合材料的力學行為和性能響應機制。

Abstract:

Graphene and its derivatives are regarded as promising reinforcing agents in the metal matrix because of their excellent intrinsic mechanical properties. Considering the availability of graphene with various types, defect states and intrinsic properties, there exists a large space in tailoring the mechanical behavior of graphene reinforced metal matrix composites. This article reviews the recent developments on the processing and structure-property correlations of these composites. Particular emphasis is given to the structure and properties of the graphene/metal interfaces, as the external mechanical load is transferred between nanocarbon and the metal matrix across their interfaces. Moreover, in addition to the intuitive load-bearing effect of graphene, a copious interplay between graphene and dislocations in the metal matrix has been found, which alters the deformation mechanism and leads to additional strengthening. To meet the requirements of structural applications, scalable fabrication routes for the graphene/metal composites should be developed and the study on the mechanical behavior under real service conditions is to be carried out.