摘要
为研究Zr4_(1.2)Ti_(13.8)Cu_(12.5)Ni_(10)Be_(22.5)非晶合金及其钨丝增强复合材料的冲击释能特性,采用Φ14.5 mm的弹道枪发射装置和准密闭反应容器开展了两种破片在不同冲击速度下的释能效应试验.通过测试Zr4_(1.2)Ti_(13.8)Cu_(12.5)Ni_(10)Be_(22.5)非晶合金破片及其钨丝增强复合材料破片撞击释能后在容器内部产生的温升和超压变化曲线,获得了该类材料的冲击释能规律,初步讨论了钨丝纤维对基体非晶合金的影响,并对破片破碎颗粒与反应产物回收观测.研究结果表明:两种破片冲击释能产生的温升与超压时程曲线均呈先急速上升然后缓慢下降的规律,温升与超压峰值增长率均随着冲击速度先增大后缓慢减小.破片冲击释能后准密闭反应容器内部温度分布呈现不均匀化.Zr4_(1.2)Ti_(13.8)Cu_(12.5)Ni_(10)Be_(22.5)非晶合金破片比钨丝增强非晶合金复合材料破片的冲击反应阈值速度更低,冲击速度相同时,钨丝增强非晶合金复合材料破片反应效率更低,单位质量能量密度更低.破片破碎后粒径较小颗粒均发生较为充分的化学反应,粒径较大的颗粒呈现反应分化现象.
In order to explore the impact energy release characteristics regularities of ZrTiCuNiBe amorphous alloy and tungsten-fiber reinforced amorphous alloy composites,aΦ14.5 mm ballistic gun launcher and the quasi-sealed test chamber system were used to get two typical fragments for further analyzing the release energy effect at different impact velocities.The temperature rise and overpressure curves were produced for ZrTiCuNiBe amorphous alloy fragments and tungsten-fiber reinforced amorphous alloy composite fragments after impact energy release in the quasi-sealed test chamber.So the impact energy release law of these kinds of material was obtained,the influence mechanism of tungsten fiber on ZrTiCuNiBe amorphous alloy was clarified,and the broken particles of fragments and some reaction products were also got and observed.The results show that the temperature rise and overpressure time history curves of the two fragments produced by impact energy release are characterized by rapid rise and then slow decline.The growth rate of temperature rise and overpressure peak increases first and then decreases slowly with the impact velocity.The temperature distribution inside the quasi-sealed test chamber is not uniform after the impact energy release of the fragments.The impact reaction threshold speed of ZrTiCuNiBe amorphous alloy fragments is lower than that of tungsten-fiber reinforced composite fragments. Under same impact velocity, the reaction efficiency of tungsten-fiber reinforced composite fragments and the energy density per unit mass are lower. It is also shows that the smaller the particle diameter after fragmentation, the higher the degree of chemical reaction.
作者
王佳敏
张先锋
查旭
熊玮
侯先苇
黄正祥
WANG Jiamin;ZHANG Xianfeng;ZHA Xu;XIONG Wei;HOU Xianwei;HUANG Zhengxiang(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing,Jiangsu 210094,China;Beijing Aerospace Technology Institute,Beijing 100074,China)
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2023年第10期1036-1046,共11页
Transactions of Beijing Institute of Technology
基金
国家自然科学基金资助项目(12141202,12002170)。
关键词
非晶合金
冲击诱发化学反应
能量释放特性
活性破片
amorphous alloy
shock-induced chemical reaction
energy release characters
reactive fragments
