| 冷作模具钢激光熔覆Ni基合金组织和性能研究 |
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| 引用本文： | 接勐,齐振翔,马腾飞. 冷作模具钢激光熔覆Ni基合金组织和性能研究[J]. 吉林化工学院学报, 2022, 39(11): 75-78. DOI: 10.16039/j.cnki.cn22-1249.2022.11.015 |
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| 作者姓名： | 接勐 齐振翔 马腾飞 |
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| 作者单位： | 1.吉林化工学院 机电工程学院，吉林 吉林 132012；2.吉林化工学院 信息与控制工程学院，吉林 吉林 132012 |
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| 摘 要： | 为提高Cr12MoV模具钢硬度和耐磨性，研究采用激光熔覆技术在其表面制备Ni基合金.研究结果表明，涂层显微组织为异向生长的树枝晶，涂层相结构为γ-(Fe, Ni)、Cr7C3、BNi2以及Ni-Cr-Fe相.由于细晶强化、固溶强化和第二相强化作用，使熔覆层平均硬度比基体硬度提高了175%.涂层摩擦系数为0.2,明显小于基体(0.4),涂层的磨损体积较基体提高1个数量级.
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| 关 键 词： | Cr12MoV 激光熔覆 Ni基合金 组织 性能 |
Study on Microstructure and Property of Laser Cladding Ni Alloy on Cold Working Die Steel |
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| Jie Meng,Qi Zhenxiang,Ma Tengfei. Study on Microstructure and Property of Laser Cladding Ni Alloy on Cold Working Die Steel[J]. Journal of Jilin Institute of Chemical Technology, 2022, 39(11): 75-78. DOI: 10.16039/j.cnki.cn22-1249.2022.11.015 |
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| Authors: | Jie Meng Qi Zhenxiang Ma Tengfei |
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| Abstract: | In order to improve the hardness and wear resistance, the study carried out laser cladding to prepare the Ni alloy coating on Cr12MoV. The results showed that the microstructure of the coating was the abnormal growth dendrite. The phases of the coating were consist of γ-(Fe,Ni)、Cr7C3、BNi2 and Ni-Cr-Fe. Because of the fine grain strengthening, solid solution strengthening and second phase strengthening, the microhardness of the coating was improved 175% as compared with that of the substrate. The coefficient of friction of the coating was 0.2, which was obviously lower than that of the substrate(0.5). As compared with the substrate, the wear volume of the coating decreased 1orders of magnitude. |
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| Keywords: | Cr12MoV laser cladding Ni-based alloy microstructure performance |
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