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- 2016
Zr-W多功能含能结构材料的制备及动态压缩特性
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Abstract:
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186 GPa。烧结生成的W2Zr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 pressing sintering Zr-W multifunctional energetic structural material was tested at different strain rates by using material testing machine and split Hopkinson pressure bar (SHPB) system. A constant strain rate dynamic loading can be obtained by combination of attaching a strain gauge directly to the sample and employing the pulse shaping technique. Test results show that Zr-W material appears good linear elasticity both under quasi-static and dynamic loading, and its elastic modulus is about 186 GPa, not so sensitive to stain rate effect. The Zr-W material presents high-strength and brittle which is attributed to the W2Zr sintering product phase, and it can fragment, react and rapidly release high amounts of energy under strong impacting load. The results show that the Zr-W material has high energy, and its dynamic failure strain and failure strength increase with the strain rate increasing. 国家自然科学基金（11572049）
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