(西安交通大学 机械工程学院， 西安 710049)
摘 要: 利用激光熔覆技术，在ZL104合金表面原位合成了TiCp/Al复合材料层。实验结果表明，经20 h混制的AlTiC粉末，在激光熔覆过程中可以充分反应合成TiCp；在所形成的TiCp/Al复合材料层中，TiC颗粒尺寸细小，约800nm；经激光熔覆后的TiCp/Al复合材料层中TiC分布均匀，仅表层有约20μm的TiC颗粒富集区和邻近基底部分有20 μm的稀释区。
关键字: 激光熔覆； 原位合成； 碳化钛；复合材料
（School of Mechanical Engineering， Xi′an Jiaotong University，Xi′an 710049， P.R.China）
Abstract:By using laser cladding， TiCp/Al composite has been insitu synthesized on the ZL104 alloy surface. During laser cladding， AlTiC powder which have been milled for 20 h, could be synthesized completely as fine TiC particles which isabout 800 nm in size. Except that there is a rich zone of TiC about 20 μm thick at the top and a dilute zone of TiCp about 20 μm thick near substrate， the distribution of TiC particles is uniform in the cladding layer.
Key words: laser cladding; insitu synthesis; TiC; composite
