The role of interfacial reaction on the dynamic mechanical response in graphene nano-flake/Ti composites
The role of interfacial reaction on the dynamic mechanical response in graphene nano-flake/Ti composites
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DOI：
10.1016/j.carbon.2019.06.073
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发表时间：
2019-11
期刊：
影响因子：
10.9
通讯作者：
X. Mu;H. Cai;H.M. Zhang;Q. Fan;X.W. Cheng;F.C. Wang;Z.H. Zhang;Y. Ge;S. Chang;Y.N. Liu;L. Liu;H. Duan
中科院分区：
文献类型：
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作者：
X. Mu;H. Cai;H.M. Zhang;Q. Fan;X.W. Cheng;F.C. Wang;Z.H. Zhang;Y. Ge;S. Chang;Y.N. Liu;L. Liu;H. Duan
为了将碳/金属纳米复合材料的微观界面特征与宏观动态性能联系起来，采用放电等离子烧结(SPS)和随后的723K、923K、23K和1323K热轧工艺制备了纳米石墨烯(GNFS)/钛复合材料。通过引入溢流型霍普金森压杆和止动环技术，研究了∼300S−1的动态性能和界面失效过程。1123K热轧GNFS/Ti复合材料具有较高的强度而不损失塑性。通过观察，我们对界面TiC纳米层在部分反应的GNF上独特而有效的载荷传递过程提供了新的见解，这似乎是导致这种特殊的动力学性质的原因。
For the purpose of relating microscopic interface characteristics to macroscopic dynamic properties in carbon/metal nano-composites, the graphene nano-flakes (GNFs)/Ti composites were fabricated by spark plasma sintering (SPS) and subsequent 723K, 923K, 23K and 1323K hot-rolling. The dynamic properties (∼3000s−1) and interface failure processes were investigated by introducing Spilt Hopkinson Pressure Bar (SHPB) and stop-ring technology. A superior strength without losing ductility was realized by 1123K as-rolled GNFs/Ti composite. Observations provide new insights into the unique and effective load transfer process of interfacial TiC nano-layer on partially reacted GNFs, which appears to be responsible for the extraordinary dynamic property.