Abstract Herein we study the infiltration behavior of Ti and Cu fillers into a Ti 2 AlC/Ti 3 AlC 2 MAX phase composites using a TIG-brazing process. The microstructures of the interfaces were investigated by scanning electron microscopy and energy dispersive spectrometry. When Ti 2 AlC/Ti 3 AlC 2 comes into contact with molten Ti, it starts decomposing into TiC x , a Ti-richandTi 3 AlC; when in contact with molten Cu, the resulting phases are Ti 2 Al(Cu)C, Cu(Al), AlCu 2 Ti and TiC. In the presence of Cu at approximately 1630 °C, a defective Ti 2 Al(Cu)C phase was formed having a P 63/ mmc structure. Ti 3 AlC 2 MAX phase was completely decomposed in presence of Cu or Ti filler-materials. The decomposition of Ti 2 AlC to Ti 3 AlC 2 was observed in the heat-affected zone of the composite. Notably, no cracks were observed during TIG-brazing of Ti 2 AlC/Ti 3 AlC 2 composite with Ti or Cu filler materials.

中文翻译：

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钨惰性气体 (TIG) 钎焊过程中 Cu 和 Ti 填料对 Ti 2 AlC/Ti 3 AlC 2 复合材料的渗透行为

摘要 在此，我们使用 TIG 钎焊工艺研究了 Ti 和 Cu 填料对 Ti 2 AlC/Ti 3 AlC 2 MAX 相复合材料的渗透行为。通过扫描电子显微镜和能量色散光谱法研究了界面的微观结构。当Ti 2 AlC/Ti 3 AlC 2 与熔融的Ti接触时，它开始分解成TiC x ，一种富Ti和Ti 3 AlC；当与熔融铜接触时，生成的相为 Ti 2 Al(Cu)C、Cu(Al)、AlCu 2 Ti 和 TiC。在大约 1630 °C 下存在 Cu 时，形成具有 P 63/mmc 结构的有缺陷的 Ti 2 Al(Cu)C 相。Ti 3 AlC 2 MAX 相在Cu 或Ti 填料存在下完全分解。在复合材料的热影响区观察到Ti 2 AlC 分解为Ti 3 AlC 2 。尤其，