中文摘要：

研究了纳米Al2O3对Ti（C，N）基金属陶瓷力学性能的影响，探讨了微米／纳米金属陶瓷的增韧机制。对断裂模式的改变、显微结构的变化、多条裂纹的产生等进行了分析。

英文摘要：

The influence of nano-scale Al2O3 on the mechanical properties of Ti（C,N）-based ceramets and toughening mechanisms of micro/nano-scale composite ceramets were studied in this paper. The major toughening mechanisms such as the transformation of fracture mode, the change of the microstructure, occurrence of the multi-crack etc. were also analyzed.