| MIG熔化注射WC增强耐磨层的显微组织分析和耐磨性研究 |
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| 引用本文： | 刘爱国. MIG熔化注射WC增强耐磨层的显微组织分析和耐磨性研究[J]. 沈阳理工大学学报, 2011, 30(4): 48-52 |
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| 作者姓名： | 刘爱国 |
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| 作者单位： | 沈阳理工大学材料科学与工程学院,辽宁沈阳,110159 |
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| 摘 要： | 采用MIG熔化注射方法在低碳钢基体上制备WC颗粒增强耐磨层,利用扫描电镜对耐磨层进行组织分析,并测试耐磨层的硬度和耐磨性能。结果表明,耐磨层成形良好,WC颗粒在耐磨层中分布较均匀,无沉底现象,和胎体金属结合良好,最外层有少量熔化分解。紧邻WC颗粒析出有Fe3W3C和/或Co3W3C,稍远处为鱼骨状共晶组织。胎体金属为马氏体组织,WC型碳化物沿晶界呈网状析出。多道熔化注射没有明显增大WC熔化分解程度。耐磨层中WC颗粒硬度没有降低,胎体金属硬度为Hv700左右,耐磨层的耐磨性约为基体的850倍.
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| 关 键 词： | 熔化注射 MIG WC 显微组织 耐磨性 |
Microstructures and Wear Resistance of WC Reinforced Wear Resistant Coating Synthesized with MIG Melt Injection |
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| LIU Aiguo. Microstructures and Wear Resistance of WC Reinforced Wear Resistant Coating Synthesized with MIG Melt Injection[J]. Transactions of Shenyang Ligong University, 2011, 30(4): 48-52 |
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| Authors: | LIU Aiguo |
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| Affiliation: | LIU Aiguo(Shenyang Ligong University,Shenyang 110159,China) |
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| Abstract: | WC particles reinforced wear-resistant coating was synthesized on low carbon steel substrate with MIG melt injection.Microstructures were examined with scanning electron microscope(SEM),and hardness and wear resistance of the coating were tested.The results showed that,the appearance of the coating was great.The WC particles were uniformly distributed in the coating,and no sinking down was observed.The WC particles were bonded to the matrix with only a little melt and dissolution on the outer surfaces.Carbi... |
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| Keywords: | melt injection MIG WC microstructure wear resistance |
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