Abstract A novel laser additive manufacturing method is proposed to manufacture the agglomeration-free nanoscale TiC-reinforced titanium-matrix composites by in-situ compounding the reinforcement via gas–liquid reaction. The clean interface and strong interfacial bonding between the in-situ nanoscale TiC reinforcement and the matrix alloy can significantly improve grain boundary behavior and grain boundary strength, besides, the mechanisms of achieving simultaneously high strength and high plasticity in the TiC/Ti6Al4V composites were studied. The proposed in-situ additive manufacturing method using pyrolysis-reaction would open a new route for manufacturing of the homogeneous and agglomeration-free nanocomposites parts with high-complexed structures and excellent mechanical properties.

中文翻译：

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通过原位激光增材制造实现无团聚纳米级 TiC 增强钛基复合材料

摘要 提出了一种新的激光增材制造方法，通过气液反应原位复合增强材料，制备无团聚的纳米级 TiC 增强钛基复合材料。原位纳米级TiC增强体与基体合金之间的清洁界面和强界面结合可以显着改善晶界行为和晶界强度，此外，研究了TiC/Ti6Al4V复合材料同时实现高强度和高塑性的机制. 所提出的使用热解反应的原位增材制造方法将为制造具有高度复杂结构和优异机械性能的均质、无团聚的纳米复合材料部件开辟一条新途径。