Effects of TC4 Thickness on the Penetration Resistance Behavior of Ti-Al3Ti Metal–Intermetallic Laminated Composites
Yang Wang, Meini Yuan, Pengfei Zhou, Xin Pei, Wei Yang, Zehui Tian
TL;DR
This study shows that increasing the thickness of titanium layers in Ti-Al3Ti metal composites significantly improves their resistance to high-speed penetration.
Contribution
The novel contribution is demonstrating that millimeter-thick Ti layers enhance anti-penetration performance through controlled crack propagation and interface failure.
Findings
A 2.5 mm Ti layer reduces projectile residual velocity by up to 100% at 600 m/s impact.
Thicker Ti layers increase crack propagation angles, improving energy absorption.
Stress wave propagation analysis reveals enhanced performance via ductile layer thickness.
Abstract
Ti-Al3Ti metal–intermetallic laminate (MIL) composites with microscale layer thickness have attracted attention in aerospace applications. However, whether millimeter-thick Ti layers can enhance the anti-penetration of Ti-Al3Ti MIL composites under 400–1000 m/s impact velocities remains unclear. In this study, a Ti-Al3Ti MIL composite target was prepared by hot press sintering, and the 2D finite element model validated by anti-penetration testing was used to prove that increasing the thickness of the Ti layer significantly increases the stress level and anti-penetration limit of the target. Simulations show that compared with a 0.1 mm Ti layer, a 2.5 mm Ti layer reduces the projectile residual velocity by 100% (600 m/s), 72% (800 m/s), and 38.5% (1000 m/s). With a total thickness difference of 0.1 mm, the crack propagation angles increase by 4° (0.06 mm Ti) and 14° (2.5 mm Ti) compared…
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Taxonomy
TopicsHigh-Velocity Impact and Material Behavior · Energetic Materials and Combustion · Metal and Thin Film Mechanics