纤维增强大块非晶的各向异性压缩力学行为原位实验研究  

In-situ Test Research on Anisotropic Compressive Mechanical Behavior of Fiber Reinforced Bulk Metallic Glass Matrix Composite

作　　者：李英杰 李继承[2] 李宁 郭亚洲[1,3] LI Yingjie;LI Jicheng;LI Ning;GUO Yazhou(School of Aeronautics,Northwestern Polytechnical University,Xi'an 710072,Shaanxi,China;Institute of Systems Engineering,China Academy of Engineering Physics,Mianyang 621999,Sichuan,China;Shaanxi Key Laboratory of Impact Dynamics and Engineering Application,Northwestern Polytechnical University,Xi'an 710072,Shaanxi,China)

机构地区：[1]西北工业大学航空学院,陕西西安710072 [2]中国工程物理研究院总体工程研究所,四川绵阳621999 [3]陕西省冲击动力学及其工程应用重点实验室,陕西西安710072

出　　处：《兵工学报》2024年第9期2982-2992,共11页Acta Armamentarii

基　　金：国家自然科学基金项目(11922211);国家科技重大专项项目(J2019-Ⅷ-0008-0169);111引智计划项目(BP0719007)

摘　　要：钨纤维增强锆基大块非晶复合材料(WF/Zr-based bulk Metallic Glass matrix composite,WF/Zr-MG)由于其高密度、高强度和高绝热剪切敏感性的特点,在动能侵彻领域应用广泛。为了进一步精确表征在正撞和斜撞等穿甲过程中不同穿甲姿态对复合材料穿甲性能的影响,搭建准静态和动态显微原位压缩实验平台。通过对0°、10°、25°、45°、65°以及90°共6种不同纤维排列角度下的试样进行原位力学性能实验测试和显微图像分析,研究6种不同纤维排列角度WF/Zr-MG的压缩力学行为,进而得到复合材料失效强度随纤维排列角度的变化情况。根据实验结果划定考虑应变率与纤维排列角度WF/Zr-MG的失效强度包络线。所得结果为材料在不同穿甲姿态和加载速率下提供了一个安全应力状态范围参考,对于穿甲材料的研制具有重要意义。Tungsten fiber reinforced zirconium-based bulk Metallic Glass matrix composite(WF/Zr-MG)is widely used in the field of kinetic energy penetration due to their high density,high strength and high adiabatic shear sensitivity.The static and dynamic micro-in-situ compression test platforms are set up to accurately characterize the influence of different armor-piercing attitudes on the armor-piercing properties of composites during forward and oblique armor-piercing.The compressive mechanical behaviors of WF/Zr-MGs with 6 different fiber arrangement angles of 0°,10°,25°,45°,65°and 90°are studied by in-situ mechanical properties test and microscopic image analysis.The change of the failure strength of the composite with the arrangement angle of fibers is obtained.According to the test results,the failure strength envelope of WF/Zr-MG considering strain rate and fiber arrangement angle is defined.It provides a reference for a safe stress state range of materials under different armor-piercing attitudes and loading rates,which is of great significance for the development of armor-piercing materials.

关 键 词：WF/Zr-MG复合材料 原位实验 微观分析 破坏机理 

分 类 号：TB331[一般工业技术—材料科学与工程]