Al-Ti-B₄C体系TiC-TiB₂/Al仿生层状复合材料抗冲击性能研究

Study on the Impact Resistance of Bionic Layered Composite of TiC-TiB₂/Al from Al-Ti-B₄C System.

作者信息

Zhao Qian, Liang Yunhong, Zhang Zhihui, Li Xiujuan, Ren Luquan

机构信息

The Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130025, China.

School of Mechanical, Aerospace and Civil Engineering, University of Manchester, Manchester M13 9PL, UK.

出版信息

Materials (Basel). 2016 Aug 20;9(8):708. doi: 10.3390/ma9080708.

DOI:10.3390/ma9080708

PMID:28773827

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5512530/

Abstract

Mechanical property and impact resistance mechanism of bionic layered composite was investigated. Due to light weight and high strength property, shell was chosen as bionic model for design of bionic layered composite. The intercoupling model between hard layer and soft layer was identical to the layered microstructure and hardness tendency of the shell, which connected the bionic design and fabrication. TiC-TiB₂ reinforced Al matrix composites fabricated from Al-Ti-B₄C system with 40 wt. %, 50 wt. % and 30 wt. % Al contents were treated as an outer layer, middle layer and inner layer in hard layers. Pure Al matrix was regarded as a soft layer. Compared with traditional homogenous Al-Ti-B₄C composite, bionic layered composite exhibited high mechanical properties including flexural strength, fracture toughness, compressive strength and impact toughness. The intercoupling effect of layered structure and combination model of hard and soft played a key role in high impact resistance of the bionic layered composite, proving the feasibility and practicability of the bionic model of a shell.

摘要

研究了仿生层状复合材料的力学性能及抗冲击机理。由于具有轻质高强的特性，贝壳被选为仿生模型用于仿生层状复合材料的设计。硬层与软层之间的相互耦合模型与贝壳的层状微观结构及硬度趋势相同，这将仿生设计与制造联系起来。由Al-Ti-B₄C体系制备的Al含量分别为40 wt.%、50 wt.%和30 wt.%的TiC-TiB₂增强Al基复合材料被用作硬层的外层、中层和内层。纯Al基体被视为软层。与传统的均匀Al-Ti-B₄C复合材料相比，仿生层状复合材料表现出较高力学性能，包括弯曲强度、断裂韧性、抗压强度和冲击韧性。层状结构的相互耦合效应以及硬软组合模型在仿生层状复合材料的高抗冲击性中起关键作用，证明了贝壳仿生模型的可行性和实用性。