| 20#钢表面镍基添Y2O3激光熔覆层及其高温磨损行为 |
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| 引用本文： | 臧辰峰,;张小彬,;赵鹏飞,;刘常升.20#钢表面镍基添Y2O3激光熔覆层及其高温磨损行为[J].沈阳黄金学院学报,2009(4):297-300. |
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| 作者姓名： | 臧辰峰 ;张小彬 ;赵鹏飞 ;刘常升 |
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| 作者单位： | [1]东北大学各向异性与织构工程教育部重点实验室,沈阳110004; [2]重庆理工大学材料科学与工程学院,重庆400050 |
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| 基金项目： | 国家自然科学基金资助（50274028）. |
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| 摘 要： | 采用激光熔覆法，在20#钢表面制备出添Y2O3的镍基合金粉末的熔覆涂层．分析了熔覆层的相组成、高温耐磨性能；观察了熔覆层显微形貌．结果表明：所制得的熔覆层组织均一、致密，与基体形成了良好的冶金结合．添加Y2O3的熔覆层硬度提高到基体的3．9倍，高温耐磨率仅是基体的1／4．熔覆层耐磨能力增强的主要原因是熔覆层与基体良好的冶金结合，镍基合金良好性能，组织细化以及硼化物、硼碳化物等析出相的强化作用．
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| 关 键 词： | 20#钢 激光熔覆 NiCrSiB Y2O3 |
Ni-based Y2O3 added laser cladding layer on 20 steel and its high temperature abrasive-wear behavior |
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| Affiliation: | ZANG Chen-feng , ZHANG Xiao-bin ZHAO Peng-fei, LIU Chang-sheng (1. Key Laboratory, for Anisotropy and Texture of Materials (Ministry of Education). Northeastern University,, Shenyang 110004 , China; 2. School of Materials Science and Engineering, Chongqine University of Technology, Chongqing 400050, China) |
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| Abstract: | Ni-based alloy laser cladding layer was made on surface of 20 steel specimens using Ni-based Y2O3 added powder. Phase constituents, high temperature abrasive-wear behavior, surface morphologies after abrasive-wearing experiment of the cladding layer was investigated. The results show that micro-hardness of laser cladding layer was 3.9 times of 20 steel. High temperature abrasive-wearing resistance was 1/4 of the steel. The improvement in high temperature abrasive-wearing resistance of the layer was due to the metallurgical bonding, good properties of Ni based alloy, microstructure refining and strengthening effects of borides and boron-carbides precipitated phases. |
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| Keywords: | 20 steel laser cladding NiCrSiB Y2O3 |
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