本文利用激光气体合金化技术对TiAl合金进行表面改性，制得了以TiN为增强相的新型快速凝固“原位”耐磨复合材料表面改性层激光表面改性层显微组织受激光处理工艺参数的控制、试验结果表明，激光气体合金化是一种提高TiAl合金耐磨性的表面改性新技术．
Laser gas alloying with nitrogen was employed to improve the wear resistance of TiAl intermetallic alloys. The rapidly solidified in situ wear resistant composite materials reinforced by hard TiN were successfully fabricated in the laser modified surface layer. The microstructure and properties of the laser modified surface are controllable by the laser processing parameters. Results of the research demonstrate preliminarily that laser gas alloying with nitrogen is a promising new surface modification technique for improving the wear resistance of TiAl intermetallic alloys.
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