| TiAl金属间化合物合金的激光气体合金化表面改性研究 |
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| 引用本文： | 王华明,郭淑平,史岗. TiAl金属间化合物合金的激光气体合金化表面改性研究[J]. 中国激光, 1997, 24(11): 1049-1052 |
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| 作者姓名： | 王华明 郭淑平 史岗 |
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| 作者单位： | 北京航空航天大学材料科学与工程系 北京100083(王华明，郭淑平)，北京航空航天大学材料科学与工程系 北京100083(史岗) |
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| 基金项目： | 国家自然科学基金(59671050)，航空科学基金(95G51005)，航空高校自选课题资助项目 |
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| 摘 要： | 对TiAl金属间化合物合金进行激光气体合金化表面改性.在激光表面改性层中成功地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.激光表面改性层厚度及显微组织与显微硬度均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很有前途的提高TiAl金属间化合物合金耐磨性的表面改性新技术.
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| 关 键 词： | TiAl金属间化合物合金 激光表面改性层 激光气体合金化 耐磨性 |
| 收稿时间： | 1996-09-09 |
Surface Modification of TiAl Intcrmctallic Alloys by Laser Gas Alloying |
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| Wang Huaming Guo Shuping Shi Gang. Surface Modification of TiAl Intcrmctallic Alloys by Laser Gas Alloying[J]. Chinese Journal of Lasers, 1997, 24(11): 1049-1052 |
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| Authors: | Wang Huaming Guo Shuping Shi Gang |
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| 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 demonstrate preliminarily that laser gas alloying with nitrogen is a potential promising new surface modification technique for improving the wear resistance of TiAl intermetallic alloys. |
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| Keywords: | TiAl intermetallic alloy laser surface modification laser gas alloying wear resistance |
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