Inspired by the structure of shell, metal–intermetallic laminated (MIL) composites consisting of ductile metal and brittle intermetallic have attracted more attention due to greatly improving intermetallic ductility and toughness. So far, many kinds of MIL composites, such as Ti-Al,^1–3 Ni-Al,^4,5 and Fe-Al,⁶ have been fabricated successfully. Moreover, a lot of research studies have been done on the microstructure, mechanical properties, fracture behavior, strengthening and toughening mechanism of MIL composites.^1,2,6 As a lightweight material, Ti-Al₃Ti laminated composites have attracted significant attentions as protective materials due to their excellent anti-impact properties.⁷ Many efforts have been made to evaluate their anti-impact and anti-penetration properties, optimize the structure, analyze the failure mode, and so on.^8–10 It is noted that, Xin et al.¹⁰ used finite element analysis to demonstrate that when the projectile velocity is lower than 1000 m s⁻¹, Ti-Al₃Ti-Al laminated composites have better anti-penetration properties than that of Ti-Al₃Ti laminated composites. Yuan et al.^11,12 also found that residual Al atoms can well eliminate the Kirkendall voids and switch the thermal stresses state in Ti-Al₃Ti-Al laminated composites. Price¹³ obtained that the residual Al maximizes the combined properties of strength, toughness, and stiffness of Ti-Al₃Ti-Al laminated composites. Konieczny¹⁴ also reported that the tensile and flexural strength of the composites depended on the thickness of Al layers.

中文翻译：

---

Ti-Al ₃ Ti-Al层状复合材料的压缩和抗渗透性能评估

受外壳结构的启发，由韧性金属和脆性金属间化合物组成的金属－金属间化合物（MIL）复合材料由于大大提高了金属间的延展性和韧性而引起了更多关注。到目前为止，已经成功地制造了多种MIL复合材料，例如Ti-Al，^1-3 Ni-Al，^4,5和Fe-Al，⁶。此外，已对MIL复合材料的微观结构，力学性能，断裂行为，增强和增韧机理进行了大量研究。^1,2,6作为轻质材料，Ti-Al ₃ Ti层压复合材料由于其出色的抗冲击性能而作为保护材料引起了广泛的关注。⁷已经进行了许多努力来评估它们的抗冲击和抗穿透性能，优化结构，分析失效模式等等。^8-10值得注意的是，Xin等。^图10使用有限元分析证明，当弹丸速度低于1000 ms ^-1时，Ti-Al ₃ Ti-Al层压复合材料具有比Ti-Al ₃ Ti层压复合材料更好的抗穿透性能。Yuan等。^11,12还发现，残留的Al原子可以很好地消除Kirkendall空隙，并改变Ti-Al ₃ Ti-Al层压复合材料的热应力状态。价钱¹³结果表明，残留的Al使Ti-Al ₃ Ti-Al层压复合材料的强度，韧性和刚度的综合性能最大化。Konieczny ¹⁴还报道了复合材料的拉伸和弯曲强度取决于Al层的厚度。