| K418激光熔覆NiCrWMo组织及耐磨性研究 |
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| 引用本文： | 王海东,;王莉,;胡宾,;刘旭,;徐晶晶.K418激光熔覆NiCrWMo组织及耐磨性研究[J].飞机设计,2014(4):42-45. |
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| 作者姓名： | 王海东 ;王莉 ;胡宾 ;刘旭 ;徐晶晶 |
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| 作者单位： | [1]海军航空工程学院青岛校区,山东青岛266041; [2]海军航空工程学院,山东烟台264001 |
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| 摘 要： | 为研究修复某航空叶片,采用Nb：YAG激光在K418镍基高温合金表面熔覆NiCrWMo涂层。分析了熔覆层组织,测试了熔覆层硬度。结果表明：采用自配的镍基合金粉末,在工艺参数为电流160 A、脉宽8 ms、频率4 Hz时,用激光熔覆能够实现对K418镍基高温合金损伤结构的修复,获得了表面平整、连续,微观组织细密、均匀,与基体呈良好冶金结合,硬度高于基体,无缺陷的熔覆层。
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| 关 键 词： | K418 激光熔覆 显微组织 硬度 |
Research on Microstructure and Wear-Resisting Property of NiCrWMo Laser Cladding on K418 |
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| Institution: | WANG Hai-dong, WANG Li, HU Bin, LIU Xu, XU Jing-jing( 1. Qingdao Branch, Naval Aeronautical Engineering University, Qingdao 266041, China ) ( 2. Naval Aeronautical Engineering University, Yantai 264001, China ) |
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| Abstract: | Laser cladding on K418 substrate using NiCrWMo powder by Nb：YAG laser was carried out for the repair of aero blades. The microstructure and microhardness of cladding layers were investigated. The result show that using the correct nickel based alloy powder, at the craft parameter of electric current 160 A, pulse width 8 ms, the frequency 4 Hz, the surface is balanced and continuous; the microstructure is close and uniformity; the cladding is well combined with the substrate without flaw; the rigidity of the cladding is higher than the substrate. |
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| Keywords: | K418 laser cladding microstructure microhardness |
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