| 钛合金表面三种预涂材料的激光熔覆研究 |
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| 引用本文： | 孟庆武,金晓鸥,耿林,张宝友.钛合金表面三种预涂材料的激光熔覆研究[J].材料科学与工艺,2006,14(3):233-235. |
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| 作者姓名： | 孟庆武 金晓鸥 耿林 张宝友 |
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| 作者单位： | 哈尔滨工业大学,材料科学与工程学院,黑龙江,哈尔滨,150001;黑龙江大学,建筑工程学院,黑龙江,哈尔滨,150086 |
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| 摘 要： | 为提高钛合金的表面耐磨性能,分别以NiCrBSi、NiCrBSi B4C和B4C Ti三种材料体系为预涂粉,在Ti-6Al-4V表面涂覆不同厚度的预涂层,采用CO2激光器进行激光熔覆工艺研究.在相同激光熔覆工艺条件下,对不同材料体系的涂层质量进行观察与分析,确认NiCrBSi B4C材料涂层是三种材料体系中最好的.在激光熔覆过程中,NiCrBSi B4C材料中的B4C和Ti发生反应,原位生成增强相,对涂层有强化作用.而且,NiCrBSi的加入控制了原位反应的剧烈程度,减少裂纹和气孔,保证了涂层质量.
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| 关 键 词： | 激光熔覆 涂层 钛合金 B4C NiCrBSi |
| 文章编号： | 1005-0299(2006)03-0233-03 |
| 收稿时间： | 2004-10-08 |
| 修稿时间： | 2004年10月8日 |
Study of laser cladding three pre-placed powders on titanium alloy |
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| MENG Qing-wu,JIN Xiao-ou,GENG Lin,ZHANG Bao-you.Study of laser cladding three pre-placed powders on titanium alloy[J].Materials Science and Technology,2006,14(3):233-235. |
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| Authors: | MENG Qing-wu JIN Xiao-ou GENG Lin ZHANG Bao-you |
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| Affiliation: | 1. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China; 2. School of Architectural and Engineering, Heilongjiang University, Harbin 150086, China |
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| Abstract: | In order to improve wear resistance of titanium alloy,using a CO_2 laser equipment,a process of clad coating on Ti6Al-4V substrate with several thicknesses of pre-placed NiCrBSi,NiCrBSi+B_4C and B_4C+Ti powder layers was studied.In the same laser process parameters,three kinds of laser coatings pre-placed with different powders were examined and analyzed.The laser cladding coating pre-placed with(NiCrBSi+)B_4C powders is the best of the three coatings.In the laser cladding process,there is a reaction between B_4C and Ti in-situ producing reinforced phases that reinforce the coating.NiCrBSi reduces activity of the reaction and a good quality coating with less cracks and pores can be obtained. |
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| Keywords: | laser clad coating titanium alloy B4C NiCrBSi |
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