Correlation between the Mechanical Properties of Tungsten Alloy Fragments and Fracture Behavior Driven by Detonation Loading

被引：0
|
作者：
Tang J.-J. [1 ]
Liang Z.-F. [1 ]
Qu K.-P. [1 ]
Zheng X.-W. [1 ]
Yan F. [1 ]
机构：
[1] Xi'an Modern Chemistry Research Institute, Xi'an
来源：
Huozhayao Xuebao/Chinese Journal of Explosives and Propellants | 2020年 / 43卷 / 03期
关键词：
Crushing behavior; Detonation loading; Explosion mechanics; Fragmentation warhead; Tungsten alloy fragment;
D O I：
10.14077/j.issn.1007-7812.202003012
中图分类号：
学科分类号：
摘要：
To study the fracture behavior of tungsten alloy fragments driven by detonation, 93W-Ni-Fe was taken as the research object and the static crushing properties, dynamic mechanical properties and fracture properties after the detonation of tungsten alloy fragments prepared by two different processes were tested. The scanning electron microscope was applied to metallographic study. Combining the original fragments and the recovered fragments after detonation loading, the integrity prediction of fragments after detonation loading was realized. The results show that the dynamic stress-strain curve and the crushing rate after detonation loading are obviously different even though the static crushing properties of the two kinds of fragments are equivalent. Therefore, the static crushing test is not enough to characterize the detonation driving integrity of fragments. However, it is found that the fragments with no obvious strain hardening behavior in dynamic stress-strain curve are more likely to be broken. Meanwhile, there are a lot of pores and uneven grain distribution in the micro morphology of fragments. The results show that the dynamic mechanical property analysis can effectively predict the detonation driven fracture behavior of tungsten alloy fragments. © 2020, Editorial Board of Journal of Explosives & Propellants. All right reserved.
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页码：293 / 297
页数：4
相关论文
共 13 条
  • [1] YANG Yun-chuan, LI Xiang-bao, WAN Ren-yi, Numerical simulation of the initial velocity and scattering angle of performed fragments, Journal of Projectiles, Rockets, Missiles and Guidance, 29, 4, pp. 96-102, (2009)
  • [2] HUMAIL I S, AKHTAR F, ASKARI S J, Et al., Tensile behavior change depending on the varying tungsten content of W-Ni-Fe alloys, International Journal of Refractory Metals & Hard Materials, 25, 5, pp. 380-385, (2007)
  • [3] HUANG Hui, HUANG Heng-jian, Reflections on the development of post-CHNO energetic materials, Progress of Materials in China, 37, 11, pp. 889-895, (2018)
  • [4] SONG Pu, XIAO Chuan, YANG Lei, Et al., High power density energy output characteristics of energetic materials, Chinese Journal of Explosives & Propellants(Huozhayao Xuebao), 41, pp. 294-297, (2018)
  • [5] WANG Shu-shan, MA Xiao-fei, SUI Shu-yuan, Et al., Experimental study on fragment dispersion of eccentric multi-point initiation warhead, Journal of Beijing Institute of Technology, 2, pp. 177-179, (2001)
  • [6] LIU Xiao-ping, ZHOU Yi-chun, WANG Chun-kui, Et al., Fracture characteristics of tungsten alloy under explosive loading, Actametalica Sinica, 30, 4, pp. 181-186, (1994)
  • [7] SONG Yu-jiang, ZHOU Tao, SHEN Fei, Et al., Research on the behavior of initial stage about explosively-driven double-layered premade fragments, Chinese Journal of Explosives & Propellants(Huozhayao Xuebao), 41, 3, pp. 308-313, (2018)
  • [8] MOTT N F., Fragmentations of shell cases, Proc Royal Soc London Series A Math Phys Sci, 189, 1018, pp. 300-308, (1947)
  • [9] TAN Duo-wang, LI Xiang, WEN Dian-ying, Experimental investigation of terminal effects of spherical tungsten fragments, Explosion and Shock Waves, 23, 5, pp. 425-429, (2003)
  • [10] WANG Ying-chun, WANG Fu-chi, LI Shu-kui, Fracture and damage behavior of tungsten alloy of 93W and 98W under explosive loading, Acta Armamentarii, 25, 6, pp. 770-772, (2004)
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