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利用材料试验机和分离式霍普金森压杆(SHPB)系统对加压烧结制备的Zr-W多功能含能结构材料在不同应变率下的压缩行为进行测试。通过在试样上直接贴应变片与波形整形技术相结合,实现了恒应变率动态加载。试验结果表明:该材料在准静态和动态加载下均呈现良好的线弹性,弹性模量对应变率效应不敏感,约为186GPa。烧结生成的W_2Zr相显著提高了Zr-W材料的强度和脆性,试样在强冲击载荷作用下发生破碎反应并释放大量的热量,表现出很高的含能特性,动态破坏应变和破坏强度表现出一定的正应变率效应。
The compressive behavior of Zr-W multifunctional energetic structural materials prepared by pressure sintering at different strain rates was tested by a material testing machine and a split Hopkinson pressure bar (SHPB) system. Through the combination of strain gauge and waveform shaping technology directly on the specimen, the constant strain rate dynamic loading is realized. The experimental results show that the material shows good linear elasticity under quasi-static and dynamic loading, and the elastic modulus is insensitive to the strain rate effect, which is about 186GPa. The W_2Zr phase produced by sintering significantly increases the strength and the brittleness of the Zr-W material. The sample undergoes a crushing reaction under a high impact load and releases a large amount of heat, exhibiting high energy performance, dynamic failure strain and failure strength A certain positive strain rate effect.