Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7969361 | Materials Characterization | 2018 | 14 Pages |
Abstract
This work highlights to develop an in-situ process to disperse uniformly graphene possessing good interfacial bonds with the matrix of Mg alloy. A homogeneous distribution of graphene in the matrix has been successfully obtained through in-situ reduction of graphene oxide (RGO) by sintering process after the graphene oxide (GO) was uniformly dispersed in AZ91 powders. The interface product nano-sized MgO can significantly improve the interfacial bonding strength between RGO and α-Mg with analysis by transmission electron microscopy. The orientation relationships of 2¯00MgO//1¯102¯αâMg and 011MgO//24¯23¯αâMg with the semi-coherent interface characteristics were clarified for the first time at the interface of MgO/α-Mg, suggesting a good lattice space matching. By employing such process, a composite containing 0.5â¯wt% of GO shows an 85.7% and 61.4% increase in yield strength and elongation, respectively, over unreinforced AZ91 alloy. The underlying strengthening mechanisms of in-situ reduced graphene oxide are discussed in detail.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Qiu-hong Yuan, Zhi-qiang Qiu, Guo-hua Zhou, Xiao-shu Zeng, Lan Luo, Xi-Xin Rao, Yan Ding, Yong Liu,