Ballistic Performance of Laminated Composite with TiB₂ Based Ceramic to Ti-6Al-4V Alloy in Continuously-Graded Microstructure

Abstract:

Laminated composite of TiB₂ based ceramic to Ti-6Al-V alloy in graded microstructure were achieved by combustion synthesis in ultra-high gravity field. XRD and FESEM results showed the presence of the graded microstructures at the joint which was characterized by multilevel (TiC_1-x-TiB-TiB₂ + TiB₂-Ti-TiC_1-x-TiB + TiB₂-TiC_1-x-TiB-Ti + TiB-TiC_1-x-Ti + TiC_1-x-Ti) and multiscale (micro-submicro-nano) of the size and the distribution of TiB₂ phases and TiB phases. It was considered that liquid fusion, atomic interdiffusion and a series of metallurgical reaction during solidification were reasoned for the continuously-graded microstructure from the ceramic to Ti alloy. Ballistic mass effectiveness coefficients of TiB₂ based ceramic and the laminated composite with TiB₂ based ceramic to Ti alloy were calculated to be 3.25 and 7.35 respectively by DOP test. The continuously-graded microstructures at the joint from the ceramic to Ti ally was considered to effectively reduce acoustic impedance mismatch between the ceramic and the metal, resulting in the enhanced ballistic performance of the target against the projectile by initiating intensive shear coupling effect.

• Periodical: Key Engineering Materials (Volume 633)
• Pages: 357-361
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.633.357
• Online since: November 2014
• Authors: Ya Lin Song*, Bao Jun Wu, Long Zhang, Zhong Min Zhao
• Keywords: Ballistic Performance, DOP Test, Graded Microstructure, Laminated Composite

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