| 激光熔覆镍基合金组织及磨损性能研究 |
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| 引用本文： | 李养良,白小波,王利,马明亮,席守谋. 激光熔覆镍基合金组织及磨损性能研究[J]. 兵器材料科学与工程, 2010, 33(6): 26-29. DOI: 10.3969/j.issn.1004-244X.2010.06.009 |
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| 作者姓名： | 李养良 白小波 王利 马明亮 席守谋 |
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| 作者单位： | 九江市绿色再制造重点实验室,江西,九江,332005;九江学院,江西,九江,332005;九江学院,江西,九江,332005;西北工业大学,材料科学与工程学院,陕西,西安,710072 |
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| 基金项目： | 江西省教育厅2010年度科技项目 |
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| 摘 要： | 利用CO2激光器在45钢基体上熔覆Ni基合金,分析激光熔覆层的微观组织,测试其显微硬度及磨损性能。结果表明,所制得熔覆层组织致密、无裂纹,与基体形成良好的冶金结合。从熔覆层表层到基体热影响区,组织呈现出由细小的树枝晶→胞状晶、树枝晶→平面晶过渡。激光熔覆层磨损量约为基体的1/3,熔覆层耐磨能力增强的主要原因在于熔覆层与基体良好的冶金结合,以及基体与涂层元素固溶强化和碳化物等析出相的强化作用所致。
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| 关 键 词： | 激光熔覆 镍基合金 显微组织 硬度 耐磨性 |
Microstructure and wear-resistance property of laser cladding Ni-based alloy |
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| LI Yangliang,BAI Xiaobo,WANG Li,MA Mingliang,XI Shoumou. Microstructure and wear-resistance property of laser cladding Ni-based alloy[J]. Ordnance Material Science and Engineering, 2010, 33(6): 26-29. DOI: 10.3969/j.issn.1004-244X.2010.06.009 |
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| Authors: | LI Yangliang BAI Xiaobo WANG Li MA Mingliang XI Shoumou |
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| Abstract: | Laser cladding of Ni-based alloy on 45 steel substrate was carried out by CO2 laser.The microstructure,microhardness,and wear resistance of the laser cladding layers were analyzed and tested.The results show that the cladding layers have compact and flawless microstructure,and form a metallurgical bond with 45 steel substrate.Microstructure of cladding zone consists of fine dendritic crystal,cellular crystal and plane crystal from the surface of cladding layers to heat-affected zone of 45 steel substrate.Th... |
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| Keywords: | laser cladding Ni-based alloy microstructure micro-hardness wear-resistance |
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