Abstract
Ti6Al4V–Al3Ti Laminated Composites exhibit excellent anti-penetration performance due to low density, high specific strength and unique failure mode. However, numerous studies showed that many defects existed in the Ti–Al3Ti laminated composites, and seriously effect its anti-penetration performance. In this paper, finite element analysis was used to studied the effects of defects (microcracks, pores, residual stress, etc) on the anti-penetration performance of Ti6Al4V–Al3Ti Laminated Composites. The results showed that the Ti6Al4V–Al3Ti Laminated Composites exhibited the better comprehensive performance as the percentage of Al increased under the velocity of projectile was less than 1000 m s−1. The pores and microcracks resulted in the anti-penetration performance deterioration of Ti6Al4V–Al3Ti Laminated Composites; The low magnitude of residual stress enhanced the anti-penetration performance of Ti6Al4V–Al3Ti Laminated Composites. However, the high level residual stress (more than 41.6 MPa) resulted in the decreases of the anti-penetration performance of Ti6Al4V–Al3Ti composite significantly.
Published Version
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