| Ni+WC基粉末激光熔覆对柱塞组织和硬度的影响 |
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| 引用本文： | 赵勇桃,李文学,蔺文跃,赵能怀.Ni+WC基粉末激光熔覆对柱塞组织和硬度的影响[J].热加工工艺,2010,39(8). |
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| 作者姓名： | 赵勇桃 李文学 蔺文跃 赵能怀 |
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| 作者单位： | 1. 内蒙古科技大学,材料与冶金学院,内蒙古,包头,014010
2. 包头光通科技有限公司,内蒙古,包头,014010 |
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| 摘 要： | 采用Ni+WC基粉末激光熔覆对严重磨损的高压水除鳞机用柱塞表面进行修复,利用光学显微分析和扫描电子显微分析方法,对熔敷层、结合层和基体进行显微组织观察及能谱分析,并测定了不同区域的显微硬度.结果表明:国外试样的基体是铁素体和奥氏体组成的双相钢,过渡层为Ni25、熔覆层为Ni60+WC的试样,熔覆层的组织分布均匀,熔覆层有大量的WC质点分布,显微硬度值较高,峰值硬度为1000 HV.
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| 关 键 词： | Ni+WC基粉末 激光熔覆 柱塞 组织 硬度 |
Effect of Laser Cladding Ni+WC Powder on Microstructure and Hardness of Plunger Piston |
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| ZHAO Yongtao,LI Wenxue,LIN Wenyao,ZHAO Nenghuai.Effect of Laser Cladding Ni+WC Powder on Microstructure and Hardness of Plunger Piston[J].Hot Working Technology,2010,39(8). |
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| Authors: | ZHAO Yongtao LI Wenxue LIN Wenyao ZHAO Nenghuai |
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| Affiliation: | ZHAO Yongtao1,LI Wenxue1,LIN Wenyao2,ZHAO Nenghuai2 (1. College of Material , Metallurgy Engineering,Inner Mogolia University of Science , Technology,Baotou 014010,China,2. Light-flux Science , Technology Co.,Ltd.,China) |
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| Abstract: | The laser cladding Ni+WC power technology was used to repair plunger piston surface. The microstructure of cladding layer, binder course and matrix were observed by OM and SEM analysis. Besides, different zones of micro-hardness was measured through micro-hardness testing. The results show that the microstructure of foreign samples, matrix is ferrite and austenite. The sample is composed of transitional layer (Ni25) and cladding layer (Ni60+WC). The microstructure of the cladding layer is uniform and a lot ... |
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| Keywords: | Ni+WC powder laser cladding plunger piston microstructure microhardness |
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