基于SHPB试验的B_(4)C/Al复合材料动态力学性能研究  

Study on Dynamic Mechanical Properties of B_(4)C/Al Composite Ceramics Based on SHPB Test

作　　者：龙奎 邓勇军[1,2] 陈小伟 姚勇 黄雪刚[4] 张石岩 Long Kui;Deng Yongjun;Chen Xiaowei;Yao Yong;Huang Xuegang;Zhang Shiyan(School of Civil Engineering and Architecture,Southwest University of Science and Technology,Mianyang 621000,China;Sichuan Provincial Key Laboratory of Engineering Materials and Structural Shock Vibration,Mianyang 621000,China;Frontier Interdisciplinary Research Institute,Beijing University of Technology,Beijing 100081,China;Hypervelocity Collision Center,China Aerodynamic Research and Development Center,Mianyang 621000,China)

机构地区：[1]西南科技大学土木工程与建筑学院,四川绵阳621000 [2]工程材料与结构冲击振动四川省重点实验室,四川绵阳621000 [3]北京理工大学前沿交叉研究院,北京100081 [4]中国空气动力研究与发展中心超高速碰撞中心,四川绵阳621000

出　　处：《稀有金属材料与工程》2022年第10期3826-3834,共9页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(1187020163,12002293);四川省科技厅应用基础项目(2018JY0410,2020YJ0423);大学生创新创业训练计划创新训练项目(S202110619082)。

摘　　要：B_(4)C/Al是一种新型金属复合陶瓷材料,相比于传统陶瓷材料,B_(4)C/Al复合材料具有低密度、高硬度、高韧性、低成本等优点,常被应用于装甲防护领域。为研究B_(4)C/Al复合材料在动态加载下的力学性能,通过分离式霍普金森压杆(SHPB)实验和电镜扫描(SEM)等技术,获得材料在不同冲击速度下的波形图,以及微观环境下的断口形貌,研究了不同应变率下材料的应力-应变曲线特征和破坏模式;同时讨论了Al含量对材料的动态压缩强度的影响规律。研究结果可为B_(4)C/Al复合材料的设计和应用提供参考。B_(4)C/Al is a novel composite material with metals and ceramics.Compared with traditional ceramic materials,B_(4)C/Al has been widely used in the protective armour due to the advantages of low density,high hardness,high toughness,and low cost.In order to research the mechanical properties of B_(4)C/Al composites under dynamic loading,the waveforms of the materials under different impact speeds and the fracture morphology under micro environment were obtained through split Hopkinson pressure bar(SHPB)testing and scanning electron microscope(SEM).And the stress-strain curve characteristics and failure modes of the materials under different strain rates were studied.Furthermore,the influence of Al content on the dynamic compressive strength of the material was analysed.The results can provide reference for the design and application of B_(4)C/Al composites.

关 键 词：B_(4)C/Al SHPB试验 动态压缩强度 

分 类 号：TB333[一般工业技术—材料科学与工程] O346.13[理学—固体力学]