碳纳米材料增强镁基复合材料研究进展  

Recent Progress on Magnesium Matrix Composites Reinforced by Carbonaceous Nanomaterials

作　　者：王晓军[1] 向烨阳 胡小石[1] 吴昆[1] WANG Xiaojun;XIANG Yeyang;HU Xiaoshi;WU Kun(School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150000,China)

机构地区：[1]哈尔滨工业大学材料科学与工程学院,哈尔滨150000

出　　处：《金属学报》2019年第1期73-86,共14页Acta Metallurgica Sinica

基　　金：国家自然科学基金项目Nos.51671066和51471059~~

摘　　要：本文综述了碳纳米材料增强镁基复合材料的国内外研究进展,详细介绍了碳纳米材料增强镁基复合材料的制备方法,着重分析了其强韧化机制,探讨了其界面结构,简单概述了其储氢性能、热性能、抗腐蚀性能,最后总结了镁基复合材料现阶段的局限性,展望了镁基复合材料未来的发展方向。Carbon nanotubes(CNTs) and graphene nanoplatelets(GNPs) with ultra-high mechanical properties are attractive reinforcements to fabricate light weight,high strength metal matrix composites.In this paper,research progress on CNTs/GNPs reinforced magnesium matrix composites is systematically reviewed.This review focuses on the recent development of the preparation techniques,strengthening and toughening mechanism,interface structure of magnesium matrix composites reinforced by carbonaceous nanomaterials.Four kinds of preparation techniques are introduced,including powder metallurgy,stirring casting,disintegrated melt deposition and friction stir process.The yield strength of composites increases with the addition of GNPs/CNTs.Several possible factors can contribute to this:(1) grain size refinement;(2) load-transfer effects;(3) generation of the dislocation density due to strain generated by the thermal expansion mismatch between the matrix and GNPs/CNTs;(4) Orowan strengthening caused by the resistance of closely spaced GNPs/CNTs to the passing of dislocations.In addition,hydrogen storage behaviors,thermal properties and corrosion resistance of composites are also briefly introduced.In the end,this review summarizes the limitations of magnesium matrix composites at present stage as well as the prospect of its future development.

关 键 词：镁基复合材料 碳纳米材料 制备方法 强韧化机制 

分 类 号：TG146[一般工业技术—材料科学与工程]