Compressive mechanical properties of W-particle/Zr-based amorphous alloy composites

Han, Jilong; Chen, X; Du, Zhonghua; Fu, Huameng; Cheng, Chun; Xu, Lizhi; Wang, J B; Du, Chengxin

doi:10.1088/2053-1591/ab2025

Cited by 14 publications

(2 citation statements)

References 24 publications

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“…In recent years, from the microscopic perspective, researchers have gradually revealed the propagation characteristics and mechanical relaxation mechanism of shear bands during the deformation of amorphous alloy materials [22][23][24]. Studies on the mechanical properties of Zr-based amorphous alloys show that temperature [25,26], strain rate [27][28][29], and component elements [30,31] affect the dynamic mechanical properties of amorphous alloys.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Zr‐Based Amorphous Alloy as a Shaped Charge Liner

Shi

Huang

2022

Propellants Explo Pyrotec

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This study aimed to investigate the mechanical properties of Zr-based amorphous alloy at high strain rates and its use as a shaped charge liner. A split Hopkinson pressure bar (SHPB) was used to carry out dynamic mechanical performance tests, and a scanning electron microscope (SEM) was used to observe the fracture morphology of the test piece. The X-ray test of the jet formation and the static penetration test of the Zr-based amorphous alloy jet were performed. It was found that the amorphous alloy material exhibits typical brittle fracture characteristics under high strain-rate compression. As the strain rate increases, molten droplet-like structures appear in the frac-ture morphology, and the melting area is proportional to the strain rate. The Zr-based amorphous alloy liner forms a non-cohesive jet driven by explosive explosion. The actual projection angle of the liner is slightly larger than the theoretical value of Taylor's projection angle because of the unique mechanical properties and fracture mechanism, while the collapse angle is slightly smaller. Compared with copper jet penetrating concrete, the aperture of Zr-based amorphous alloy jet is increased by 58 % and the caving volume is increased by 32 times. The results provide reference for the application of Zr-based amorphous alloy in the field of shaped charge liner.

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Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Zr‐Based Amorphous Alloy as a Shaped Charge Liner

Shi

Huang

2022

Propellants Explo Pyrotec

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“…The perforation depth of the cone shaped liner is large, but the diameter of the broken hole is small, and the spherical shaped liner is opposite. The shaped-charge liners in new high-density alloys or elemental metals have a high armor penetration depth, but the aftereffect is insufficient; the PTFE energetic shaped-charge liner has a large aftereffect but is sensitive to standoff distance (1-2 times the charge diameter), and it is difficult to penetrate thick steel targets (> 1.5 times the charge diameter) [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32]. At present, a kind of line and charge structure is needed, which gives consideration to penetration depth and aftereffect.…”

Section: Introductionmentioning

confidence: 99%

Design and penetration of a new W-particle/Zr-based amorphous alloy composite liner

Han

Chen

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

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In this paper, in order to boost the power of shaped charge, a new type of W-particle/Zr-based amorphous alloy composite liner embedded with a restraining cylinder is designed, which is different from the original shaped charge structure. The inner restraining cylinder divides the charge into two coaxial columns: inner and outer, which changes the flow mode of the material in the liner and improves the utilization rate of explosive charge. For the first time, W-particle/Zr-based amorphous alloy (W/Zr amorphous) was used to replace the traditional copper, enhancing the penetration depth and increasing the aftereffect. Theoretical analysis and numerical simulation show that the new type of liner is feasible with great advantages. The static explosion test shows that the penetration depth of W/Zr amorphous liner is 66.35% higher than that of the copper liner, and the overpressure behind the target is 0.24 MPa. Moreover, the jet is more stable without pestle. This is a new type of composite liner with wide application prospect.

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