Interface Structure and Anti-ballistic Mechanism of TiB2/Ti-6Al-4V Graded Armor Composites

doi:10.3969/j.issn.1000-1093.2015.10.018

Abstract

Abstract: The TiB₂/Ti-6Al-4V graded armor composites are prepared by metallurgically bonding of TiB₂ and Ti alloy in ultra-high gravity field for promoting the protection efficiency of armored vehicles, and the effect of interface structure on the ballistic performance is analyzed through the results of XRD and FESEM, DOP experiment and numerical simulation. XRD and FESEM results show that the graded microstructures exist at a joint which is characterized by the size and the distribution of TiB₂ phases and TiB phases. The protection coefficients of TiB₂ based ceramic and TiB₂/Ti-6Al-4V graded armor composites are calculated to be 3.05 and 7.30, respectively, by DOP experiment. Compared with TiB₂ based ceramic, the ballistic performance of TiB₂/Ti-6Al-4V graded armor composites greatly increases. It is considered that the graded microstructure at the joint of TiB₂/Ti-6Al-4V effectively reduces the acoustic impedance mismatch and increases the shear strength of the joint, and finally enhances the ballistic performance of the target against a projectile.

Key words: ordnance science and technology, TiB₂/Ti-6Al-4V graded armor composite, melting bonding, interface microstructure, anti-ballistic mechanism

CLC Number:

TB333

SONG Ya-lin, ZHANG Long, ZHAO Zhong-min, PAN Chuan-zeng. Interface Structure and Anti-ballistic Mechanism of TiB₂/Ti-6Al-4V Graded Armor Composites[J]. Acta Armamentarii, 2015, 36(10): 1955-1961.

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Interface Structure and Anti-ballistic Mechanism of TiB₂/Ti-6Al-4V Graded Armor Composites

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