| Cr3C2颗粒增强型堆焊合金组织与性能分析 |
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| 引用本文： | 郑丽娟,刘会莹,付宇明,韩晓娟.Cr3C2颗粒增强型堆焊合金组织与性能分析[J].东北重型机械学院学报,2012(4):324-327. |
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| 作者姓名： | 郑丽娟 刘会莹 付宇明 韩晓娟 |
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| 作者单位： | 燕山大学机械工程学院,河北秦皇岛066004 |
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| 基金项目： | 国家自然科学基金资助项目（51105325） |
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| 摘 要： | 对加入Cr3C2的药芯焊丝制备的Cr3C2增强型堆焊合金组织和性能进行了分析。添加Cr3C2的自保护药芯焊丝堆焊工艺性能良好,堆焊表面少飞溅,无裂纹气孔。通过对比实验研究发现,加入Cr3C2的药芯焊丝制备的Cr3C2增强型堆焊合金组织细小,高温冲击韧性明显优于WC颗粒增强型药芯焊丝,合金组织中既有颗粒增强型药芯焊丝堆焊产生的颗粒增强相,又有高铬铸铁型药芯焊丝堆焊产生的高硬度初生碳化物,双重强化机制使堆焊层显微硬度达到含Nb高铬铸铁堆焊层的水平,平均硬度60 HRC以上。
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| 关 键 词： | Cr3C2颗粒 自保护药芯焊丝 堆焊合金 组织分析 |
Analysis on microstructure and performance of Cr3C2 enhanced surfacing welding alloy |
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| Authors: | ZHENG Li-juan LIU Hui-ying FU Yu-ming HAN Xiao-juan |
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| Affiliation: | (College of Mechanical Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China) |
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| Abstract: | The microstructure and performance of Cr3C2 enhanced surfacing welding alloy are analyzed. Self shielded flux-cored wire which contains Cr3C2 particles has a good welding performance. Welding surface has fewer spatters, especially no crack and holes. Comparison test analysis has found that the microstructure of Cr3C2 enhanced self shielded flux-cored wire surfacing layer is fine and smooth. Besides, its impact toughness is better than WC self shielded flux-cored wire. Cr~C2 enhanced surfacing layer contains not only Cr3C2 particles, but also high hardness primary carbide which produced by high chromium cast iron flux-cored wire welding. Therefore, surfacing layer has the very high micro hardness and the average value exceeds 60 HRC, which is same with Nb enhanced flux-cored wire. |
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| Keywords: | Cr3C2 particles self shielded flux-cored wire surfacing welding alloy microstructure analysis |
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