Research on Dynamic Compression Properties of TiB2-B4C Composite

被引：0
|
作者：
Gao Y. [1 ]
Qin G. [1 ]
Zhang W. [2 ]
Yi C. [3 ]
Deng Y. [4 ]
机构：
[1] School of Science, North University of China, Taiyuan, 030051, Shanxi
[2] School of Astronautics, Harbin Institute of Technology, Harbin, 150080, Heilongjiang
[3] Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, 621900, Sichuan
[4] Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province, Southwest University of Science and Technology, Mianyang, 621010, Sichuan
来源：
Binggong Xuebao/Acta Armamentarii | 2019年 / 40卷 / 11期
关键词：
Compression property; Dynamic mechanical property; Strain rate effect; TiB[!sub]2[!/sub]-B[!sub]4[!/sub]C composite;
D O I：
10.3969/j.issn.1000-1093.2019.11.015
中图分类号：
学科分类号：
摘要：
In order to study the dynamic mechanical properties of TiB2-B4C composite and the effect of additive TiB2 on the mechanical properties, a series of static/dynamic compression experiments and plate impact experiments were designed to evaluate the dynamic compression property of the composite at different strain rates. Experimental results show that the TiB2-B4C composite is a brittle material as ceramic. The stress-strain relations of the composite show a typical linear characteristic. The Hugoniot elastic limit of the composite is increased from 14.98 to 16.91 GPa with the increass in loading strain rate. When the loading rate is lower than 103 s-1, the dynamic compression strength of TiB2-B4C composite is higher than those of the pure B4C and pure TiB2 ceramic, and it has a positive strain rate sensitivity under one-dimensional stress wave loading. The increase in compression strength of the composite benefits from the improvement of the microstructure. The strain rate sensitivity is mainly controlled by the additive TiB2 which serves as a strengthening and toughening agent. However, when the loading rate is higher than 104 s-1, the Hugoniot elastic limit of TiB2-B4C composite is close to that of the matrix B4C, and is little affected by the additive TiB2. © 2019, Editorial Board of Acta Armamentarii. All right reserved.
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页码：2304 / 2310
页数：6
相关论文
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