| Fe41Co7Cr15Mo14C15B6Y2合金涂层的激光制备及显微组织研究 |
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| 引用本文： | 张培磊,李铸国,姚成武. Fe41Co7Cr15Mo14C15B6Y2合金涂层的激光制备及显微组织研究[J]. 上海工程技术大学学报, 2010, 24(4): 359-362. DOI: 10.3969/j.issn.1009-444X.2010.04.019 |
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| 作者姓名： | 张培磊 李铸国 姚成武 |
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| 作者单位： | 上海工程技术大学,材料工程学院,上海,201620上海交通大学,上海市激光制造与材料改性重点实验室,上海,200240 |
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| 基金项目： | 上海市教委重点学科建设资助项目 |
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| 摘 要： | 利用激光熔覆和激光重熔的方法在低碳钢表面制备了原位生成颗粒增强铁基涂层.用X线衍射(XRD)、扫描电镜(SEM)对其相结构和微观组织进行了研究,重点分析了重熔层的组织形态和形成机制.结果表明:制备的涂层无气孔和裂纹,整个涂层的厚度为0.6~0.7 mm,重熔层厚度为50~80 μm;熔覆层主要是方向比较紊乱的树枝晶组织,重熔层内形成了细小的等轴晶组织;重熔层最高显微硬度达到了1056 HV.
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| 关 键 词： | 激光熔覆 显微组织 涂层 |
Research on Laser Preparation and Microstructure of Fe41Co7Cr15Mo14C15B6Y2 Alloy Coating |
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| ZHANG Pei-lei,LI Zhu-guo,YAO Cheng-wu. Research on Laser Preparation and Microstructure of Fe41Co7Cr15Mo14C15B6Y2 Alloy Coating[J]. Journal of Shanghai University of Engineering Science, 2010, 24(4): 359-362. DOI: 10.3969/j.issn.1009-444X.2010.04.019 |
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| Authors: | ZHANG Pei-lei LI Zhu-guo YAO Cheng-wu |
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| Affiliation: | 1.College of Materials Engineering,Shanghai University of Engineering Science,Shanghai 201620,China;2.Shanghai Key Laboratory of Materials Laser Processing and Modification,Shanghai Jiaotong University,Shanghai 200240,China) |
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| Abstract: | Through the method of laser cladding and remelting,the in-situ particle reinforced Fe-based coating was prepared on the surface of the mild steel.The phase structure and microstructure were analyzed by XRD and SEM,a focus was laid on analyzing the microstructure and forming mechanism of remelted layer.The experimental results show that the coating was prepared without pores and cracks,the coating thinkness was about 0.6～0.7 m,the remelting coating thickness was about 50～80 μm,the microstructure of claddings are mainly fir-tree crystals of disordered directions and that of remelted layers are small equiax crystals,the highest microhardness in the remelted zone is up to 1 056 HV. |
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| Keywords: | laser cladding microstructure coating |
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