古青,包海斌,王永强,冯敏敏,董刚,尤涵潇,杨高林,姚建华.Si含量对316L不锈钢激光熔覆层凝固行为和显微组织的影响[J].表面技术,2025,54(5):167-175.
GU Qing,BAO Haibin,WANG Yongqiang,FENG Minmin,DONG Gang,YOU Hanxiao,YANG Gaolin,YAO Jianhua.Effects of Si Content on Solidification Behavior and Microstructure of 316L SS Laser Cladding Layer[J].Surface Technology,2025,54(5):167-175 |
| Si含量对316L不锈钢激光熔覆层凝固行为和显微组织的影响 |
| Effects of Si Content on Solidification Behavior and Microstructure of 316L SS Laser Cladding Layer |
| 投稿时间：2024-05-17 修订日期：2024-11-06 |
| DOI：10.16490/j.cnki.issn.1001-3660.2025.05.013 |
| 中文关键词: 激光熔覆 Si元素 316L 凝固组织 晶粒细化 |
| 英文关键词:laser cladding Si element 316L solidification structure grain refinement |
| 基金项目:国家自然科学基金(52035014);浙江省公益技术应用研究项目(LGG22E050036);舟山科技计划(2023C13011) |
| 作者 | 单位 |
| 古青 | 国能浙江北仑第一发电有限公司，浙江 宁波 315800 |
| 包海斌 | 国能浙江北仑第一发电有限公司，浙江 宁波 315800 |
| 王永强 | 国能浙江北仑第一发电有限公司，浙江 宁波 315800 |
| 冯敏敏 | 国能浙江北仑第一发电有限公司，浙江 宁波 315800 |
| 董刚 | 特种装备制造与先进加工技术教育部/浙江省重点实验室，杭州 310023;浙江工业大学 a.机械工程学院 b.激光先进制造研究院，杭州 310023 |
| 尤涵潇 | 特种装备制造与先进加工技术教育部/浙江省重点实验室，杭州 310023;浙江工业大学 a.机械工程学院 b.激光先进制造研究院，杭州 310023 |
| 杨高林 | 特种装备制造与先进加工技术教育部/浙江省重点实验室，杭州 310023;浙江工业大学 a.机械工程学院 b.激光先进制造研究院，杭州 310023 |
| 姚建华 | 特种装备制造与先进加工技术教育部/浙江省重点实验室，杭州 310023;浙江工业大学 a.机械工程学院 b.激光先进制造研究院，杭州 310023 |
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| Author | Institution |
| GU Qing | Guoneng Zhejiang Beilun First Power Generation Co., Ltd., Zhejiang Ningbo 315800, China |
| BAO Haibin | Guoneng Zhejiang Beilun First Power Generation Co., Ltd., Zhejiang Ningbo 315800, China |
| WANG Yongqiang | Guoneng Zhejiang Beilun First Power Generation Co., Ltd., Zhejiang Ningbo 315800, China |
| FENG Minmin | Guoneng Zhejiang Beilun First Power Generation Co., Ltd., Zhejiang Ningbo 315800, China |
| DONG Gang | Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Education and Zhejiang Province, Hangzhou 310023, China;a.College of Mechanical Engineering, b.Institute of Laser Advanced Manufacturing, Zhejiang University of Technology, Hangzhou 310023, China |
| YOU Hanxiao | Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Education and Zhejiang Province, Hangzhou 310023, China;a.College of Mechanical Engineering, b.Institute of Laser Advanced Manufacturing, Zhejiang University of Technology, Hangzhou 310023, China |
| YANG Gaolin | Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Education and Zhejiang Province, Hangzhou 310023, China;a.College of Mechanical Engineering, b.Institute of Laser Advanced Manufacturing, Zhejiang University of Technology, Hangzhou 310023, China |
| YAO Jianhua | Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Education and Zhejiang Province, Hangzhou 310023, China;a.College of Mechanical Engineering, b.Institute of Laser Advanced Manufacturing, Zhejiang University of Technology, Hangzhou 310023, China |
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| 中文摘要: |
| 目的 研究Si元素含量对316L不锈钢激光熔覆层凝固行为和显微组织的影响。方法 利用LDF400-2000光纤耦合半导体激光器和ABB机械手组成的激光熔覆系统，在316L不锈钢基体上制备Si元素的质量分数分别为0.8%、1.6%的316L激光熔覆层。使用金相显微镜、扫描电镜(SEM)、电子背散射衍射(EBSD)、透射电镜(TEM)和维氏硬度计，分别从激光束扫描方向(SD)和切向(TD)分析熔覆层的微观组织、晶粒取向、织构和显微硬度。结果 在SD方向，0.8%-Si熔覆层的中下部晶粒呈垂直于底部界面的柱状生长趋势，而顶部晶粒则呈胞状，1.6%-Si熔覆层晶粒的生长模式与0.8%-Si熔覆层类似，但取向更随机。在TD方向，0.8%-Si熔覆层晶粒呈外延状，取向为<100>方向，而1.6%-Si熔覆层则为<111>方向。与0.8%-Si熔覆层相比，1.6%-Si熔覆层内小角度晶界占比更高，超过了50%，在晶粒内部可见被位错缠绕的亚微米颗粒，其硬度也从0.8%-Si熔覆层的199.7HV0.3提升到212.2HV0.3。结论 Si元素的含量对激光熔覆316L凝固行为和组织有着显著影响，改变了熔覆层的凝固模式，使组织结构由粗大外延生长的树枝晶转变为沿温度梯度方向生长的细小晶粒。 |
| 英文摘要: |
| In this study, the influence of different mass fractions of silicon (Si) on the solidification microstructure of 316L stainless steel during laser cladding process was investigated in details. A laser cladding system consisting of a LDF400-2000 fiber-coupled semiconductor laser and an ABB manipulator was utilized to deposit a cladding layer containing 0.8% and 1.6% Si on an 316L substrate. Multiple characterization techniques, such as optical microscopy, scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), transmission electron microscopy (TEM), and Vickers hardness testing were employed to assess the microstructure, formation mechanism, grain orientation, texture, and microhardness of the cladding layer both in the scanning direction (SD) and the tangential direction (TD). |
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