| 钢表面激光熔覆钴基合金层的组织和耐磨性的研究 |
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| 引用本文： | 姜鹤明,张光钧.钢表面激光熔覆钴基合金层的组织和耐磨性的研究[J].应用激光,2012,32(4):289-293. |
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| 作者姓名： | 姜鹤明 张光钧 |
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| 作者单位： | 姜鹤明:上海工程技术大学材料工程学院, 上海 201620
张光钧:上海工程技术大学材料工程学院, 上海 201620
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| 摘 要： | 采用CO2横流激光在40Cr钢表面熔覆不同配比的钴基合金粉末,采用摩擦磨损试验机测试试样的摩擦磨损性能。对摩擦系数以及耐磨性均较高的试样,采用微观分析及力学性能测试手段对熔覆层显微组织、物相、成分进行比较研究。结果表明:在现有实验条件下,激光熔覆层的强化相呈现网络状加弥散分布的颗粒状使裂纹或者缺陷的萌生门槛值增加,裂纹扩展速率减慢,导致钴基合金激光熔覆层的摩擦系数和耐磨性能的协同提高。
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| 关 键 词： | 激光熔覆 摩擦系数 耐磨性 钴基合金 |
| 收稿时间： | 2012/6/15 |
Research of the Microstructure and Wear Resistance of Laser Cladding Cobalt-Based Alloy Layer over Steel Surface |
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| Jiang Heming,Zhang Guangjun.Research of the Microstructure and Wear Resistance of Laser Cladding Cobalt-Based Alloy Layer over Steel Surface[J].Applied Laser,2012,32(4):289-293. |
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| Authors: | Jiang Heming Zhang Guangjun |
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| Affiliation: | (Shanghai University of Engineering Science School of materials Engineering,Shanghai,201620,China) |
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| Abstract: | CO2 laser were used for the 40Cr steel cladding cobalt-based alloys of different proportions of metal powder, friction andwear properties were tested by the friction and wear tester test specimen. Friction coefficient and higher wear resistance of thespecimen, the microstructure analysis and mechanical properties testing comparative study on the cladding layermicrostructure,phaseandcomposition.Thelasercladdinglayertostrengthenpresentstmeansahe network-like and dispersed structure, thespecial structure lead the granular crack initiation threshold increases, the crack growth rate slows down, the friction coefficient of thecobalt-based alloy laser cladding layer and wear resistance of synergy to improve. |
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| Keywords: | laser cladding the coefficient of friction wear resistance cobalt based alloys |
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