Tailoring of interface reaction, microstructure and compressive properties of graphene reinforced titanium alloy matrix composites

被引：0
|
作者：
Wang J. [1 ]
Zhang F. [1 ]
Shang C. [1 ]
Zhang B. [1 ]
机构：
[1] Jiangsu Key Laboratory of Advanced Metallic Materials, Southeast University, Nanjing
来源：
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2020年 / 37卷 / 12期
关键词：
Compressive properties; Graphene; Network structure; Spark plasma sintering; Titanium matrix composites;
D O I：
10.13801/j.cnki.fhclxb.20200421.001
中图分类号：
学科分类号：
摘要：
Few-layered graphene reinforced titanium matrix composites (GR/TC4) with 3D network structures were fabricated through a 3D mixing machine and spark plasma sintering (SPS) technique. The effects of different sintering temperatures, holding time, heating rate and uniaxial pressure in the SPS on the in-situ interface reaction of GR with titanium matrix were studied. The phases, microstructure and compressive properties at room temperature of the network structured composites with different GR/TiC ratios were investigated systematically. Experimental results exhibite that the SPS temperature and heating rate are the key factors for determination of reaction ratio of the GR with matrix and the uniaxial pressure affects relative density of the composites. Low temperature, high pressure and fast sintering can inhibit the reaction between the GR and matrix. However, the composites with more residual GR do not show excellent mechanical properties. It is indicated that excellent compressive strength and ductility integrated mechanical properties are achieved with GR reaction ratio of 70%-80% in the 0.25wt% GR/TC4 composites, where the interface bonding is to an optimal state. The 3D network distribution of GR in the titanium alloy matrix can tailor the conflict between strength and ductility of the titanium matrix nanocomposites. Copyright ©2020 Acta Materiae Compositae Sinica. All rights reserved.
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页码：3137 / 3148
页数：11
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