【作者】 王华明； 郭淑平； 史岗； 何秀丽；

【Author】 Wang Huaming, Guo Shuping, Shi Gang and He Xiuli (Beijing University of Aeronautics and Astronautics, Beijing 100083)

【机构】 北京航空航天大学；

【摘要】 本文对TiAl金属间化合物合金进行激光气体合金化,制得了以高硬度氮化钛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与显微硬度受激光处理工艺参数的控制。初步试验结果表明,激光气体合金化是一种有前途的提高TiAl金属间化合物合金耐磨性的表面改性新技术。更多还原

【Abstract】 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 titanium nitride were successfully fabricated in the laser modified surface layer. The microstructure and hardness of the laser modified surface are governed by the laser processing parameters. Results of the research demonstrate preliminarily that laser gas alloying with nitrogen is a promising surface modification technique for improving the wear resistance of TiAl intermetallic alloys.更多还原