Preparation and mechanical performance of graphene platelet reinforced titanium nanocomposites for high temperature applications

JOURNAL OF ALLOYS AND COMPOUNDS

卷:765

Article

Liu, Jian¹  Wu, Mingxia¹  Yang, Yi¹  Yang, Gang¹  Yan, Haixue²  Jiang, Kyle³ 

[1] Sichuan Univ, Sch Mfg Sci & Engn, Chengdu 610065, Sichuan, Peoples R China

[2] Univ London Queen Mary, Sch Mat Sci & Engn, London E1 4NS, England

[3] Univ Birmingham, Dept Mech Engn, Sch Engn, Birmingham B15 2TT, W Midlands, England

关键词: Graphene platelet;    Titanium;    Composites;    Spark plasma sintering;    Compressive property;   

DOI  :  10.1016/j.jallcom.2018.06.148

来源: Elsevier

【 摘 要 】

In this paper graphene platelet (GPL)-reinforced titanium (Ti) composites (GPL/Ti) were prepared using spark plasma sintering to evaluate a new type of structural material. The microstructure, mechanical properties and high temperature compressive properties of the GPL/Ti composites were studied. It was found that GPLs are well dispersed in the Ti matrix and the introduction of GPL results in the refinement of the Ti microstructure. Although x-ray diffraction results imply no traceable reaction products are produced in GPL/Ti composites, scanning electron and element analyses indicate titanium carbide particles are found along the interface between the GPL and Ti matrix. Compressive tests show that GPL/Ti composites exhibit higher yield strength and better compressive performance than the pure Ti samples. A maximum increase of approximately 43% and 37% in yield strength and compressive strength are achieved, respectively. Raman analysis suggests the reaction between GPLs and Ti results in the reduction in the number of the layers in graphene structure. The presented work suggests that GPL/Ti might be of great potential to be used as a structural material in various engineering fields. (C) 2018 Elsevier B.V. All rights reserved.

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