Recently, numerous ductile metal–brittle intermetallic laminated composite systems, for instance, Ti-Al,^1–5 Ni-Al,⁶ Nb-Al,⁷ and Ti-Cu,⁸ have been designed and produced by diverse processing methods. In Vecchio et al.’s work,^1–4 titanium–titanium trialuminide (Ti/Al₃Ti) metal–intermetallic laminated (MIL) composite has been synthesized successfully in air, and the composite with unique properties attracted broad attention among the MIL systems. The failure behavior of the Ti/Al₃Ti laminated composite has been explored in many investigations through which the deformation mechanism of the MIL composite can be further understood. For example, Vecchio et al.’s,^2,3,9 Li et al.’s,^5,10 and Peng et al.’s¹¹ works discussed the failure mechanism of the MIL composite by compressive and bending tests. The works proved that the main crack initiates and propagates in the brittle Al₃Ti layer and branches into several smaller cracks. Then, the ductile Ti layers arrest the propagation of the branched cracks as a result of their crack bridging effect. Nevertheless, the limited fracture toughness of Ti/Al₃Ti MIL composite restricted its application, which was caused by the poor plasticity of Al₃Ti intermetallic.^12–15

中文翻译：

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形状记忆合金NiTi纤维对连续陶瓷Al ₂ O ₃纤维增强Ti / Al ₃ Ti金属-金属间层合复合 材料的组织和力学性能的影响

最近，已经通过多种加工方法设计和生产了许多韧性金属-脆性金属间化合物层压复合材料系统，例如Ti-Al，^1-5 Ni-Al，⁶ Nb-Al，⁷和Ti-Cu ⁸。在Vecchio等人的工作中，成功地在空气中合成了^1–4钛-三甲基钛（Ti / Al ₃ Ti）金属-金属间层压（MIL）复合材料，其独特性能引起了MIL的广泛关注。系统。在许多研究中已经探索了Ti / Al ₃ Ti层压复合材料的失效行为，通过该行为可以进一步了解MIL复合材料的变形机理。例如，Vecchio等人，^2,3,9 Li等人，^5,10和Peng等人的^11个工作通过压缩和弯曲试验讨论了MIL复合材料的破坏机理。实验证明主裂纹在脆性的Al ₃ Ti层中萌生并扩展，并分支成几个较小的裂纹。然后，可延展的Ti层由于其裂纹桥接效应而阻止了分支裂纹的扩展。然而，Ti / Al ₃ Ti MIL复合材料有限的断裂韧性限制了其应用，这是由于Al ₃ Ti金属间化合物的可塑性差所致。^12-15