Interfacial Behavior and Damage Mechanism of Al-B4c/Al Laminated Composites Under Ballistic Impact

Abstract

In this present work, the Al-B4C/Al laminated composites with high strength bonding interface were fabricated by an integrate (or one-step) hot-pressed sintering method followed by hot rolling. The mechanical properties and interface behavior of Al-B4C/Al laminated composites under different loadings and especially ballistic impact were investigated. The results show that the high strength interface bonding (no less than 318MPa) is achieved based on continuous Al matrix, and no interlayer delamination occurs even after Charpy impact failure and ballistic penetration. The Coordinate deformation between different component layers occurs due to the integrate interface, which can improve comprehensive mechanical performance of the Al-B4C/Al laminated composites. Moreover, the Al-B4C/Al laminated plate with integrate interface can absorb more impact energy of projectile (by 10% and 70%) compared with the monolithic and stacked (unbonded) plate respectively.

Keywords: Al-B4C/Al laminated composites, hot pressing, hot rolling, interface bonding, coordinate deformation