The low density and high-temperature mechanical properties of intermetallic Ti₃Al based alloys are highly desirable for a wide range of critical applications. In this paper, we designed and prepared a novel laminated Ti₅Si₃/Ti₃Al composite (LTTC) consisting of alternating Ti₅Si₃-lean/coarse-grained Ti₃Al layers (TCLs) and Ti₅Si₃-rich/fine-grained Ti₃Al layers (TFLs). The processing route involves hot pressing of a stack of alternating Ti foils and Al-6Si foils, followed by a two-step reaction annealing. The tensile properties of the LTTC have also been evaluated, and the LTTC exhibited a good strength-ductility combination when compared with monolithic Ti₃Al. By in-depth mechanism discussion, we propose the possible approaches to further enhance the mechanical properties of such LTTC.

金属间化合物Ti ₃ Al基合金的低密度和高温机械性能对于广泛的关键应用是非常理想的。在本文中，我们设计并制备一种新颖的层压的Ti ₅的Si ₃ / Ti的₃ Al复合材料（LTTC）由交替的Ti ₅的Si ₃贫乏/粗粒度的Ti ₃的Al层（TCLs）和Ti ₅的Si ₃富/细晶Ti ₃铝层（TFL）。该工艺路线包括对交替的Ti箔和Al-6Si箔的堆叠进行热压，然后进行两步反应退火。还评估了LTTC的拉伸性能，与单片Ti ₃ Al相比，LTTC表现出良好的强度-延展性组合。通过深入的机制讨论，我们提出了进一步增强此类LTTC的机械性能的可能方法。