|
|||||
|
|
| 低碳钢表面激光熔覆不锈钢的组织和性能 | |
| 引用本文： | 王戈,富玉竹,姚权桐,佟伟平. 低碳钢表面激光熔覆不锈钢的组织和性能[J]. 金属热处理, 2021, 46(2): 185-189. DOI: 10.13251/j.issn.0254-6051.2021.02.034 |
| 作者姓名： | 王戈 富玉竹 姚权桐 佟伟平 |
| 作者单位： | 1.东北大学 材料科学与工程学院, 辽宁 沈阳 110819; 2.中国科学院 青岛生物能源与过程研究所, 山东 青岛 266101 |
| 基金项目： | NSFC-山西煤基低碳联合基金;东北大学与中国一重合作项目 |
| 摘 要： | 采用JHM-1GY-400型脉冲Nb∶YAG固体激光器和316L不锈钢粉末在20低碳钢表面制备了激光熔覆层。利用OM、XRD、SEM等表征方法分析了不锈钢熔覆层的物相组成和显微组织,并分别利用旋转摩擦试验机和电化学工作站对熔覆层和基材的耐磨损和耐腐蚀性进行了研究。试验结果表明,不锈钢熔覆层厚度约为50 μm,由γ相(奥氏体)和α相(铁素体)组成,其显微组织主要包括细小的树枝晶、粗大的胞状晶以及平面晶;不锈钢熔覆层表面硬度约为基材的2倍,摩擦因数比基材低0.0418,磨损量更低,不锈钢熔覆层比基材具有更高的耐磨性。与基材相比,不锈钢熔覆层具有更低的自腐蚀电流和更高的自腐蚀电位,其耐腐蚀性能更优异。 |
| 关 键 词： | 激光熔覆 316L不锈钢 低碳钢 显微组织 耐磨性 耐蚀性 |
| 收稿时间： | 2020-07-22 |
Microstructure and properties of laser clad stainless steel layer on surface of low carbon steel |
|
| Wang Ge,Fu Yuzhu,Yao Quantong,Tong Weiping. Microstructure and properties of laser clad stainless steel layer on surface of low carbon steel[J]. Heat Treatment of Metals, 2021, 46(2): 185-189. DOI: 10.13251/j.issn.0254-6051.2021.02.034 | |
| Authors: | Wang Ge Fu Yuzhu Yao Quantong Tong Weiping |
| Affiliation: | 1. School of Materials Science and Engineering, Northeastern University, Shenyang Liaoning 110819, China; 2. Qingdao Institute of Bioenergy and Process, Chinese Academy of Sciences, Qingdao Shandong 266101, China |
| Abstract: | The 316 L stainless steel powder was cladded on the surface of 0.20%C low carbon steel by JHM-1 GY-400 pulse Nb∶YAG laser.The phase composition and microstructure of the 316 L clad layer were analyzed by OM,XRD and SEM.The wear resistance and corrosion resistance of the 316 L clad layer and the substrate(0.20%C low carbon steel)were studied by rotary friction tester and electrochemical workstation.The results show that the clad layer is about 50μm thick and is composed ofγphase(austenite)andαphase(ferrite).The microstructure of the clad layer mainly includes fine dendrites,coarse cellular crystals and planar front.The surface hardness of the clad layer is about twice of that of the substrate,while the friction coefficient is 0.0418 lower than that of the substrate,and the wear loss is lower,indicating that the stainless steel clad layer has a higher wear resistance than that of the substrate.Compared with the substrate,the clad layer has lower self-corrosion current and higher self-corrosion potential,indicating that the corrosion resistance of the stainless steel clad layer is better. |
| Keywords: | laser cladding 316L stainless steel low carbon steel microstructure wear resistance corrosion resistance |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
| 点击此处可从《金属热处理》浏览原始摘要信息 | |
| 点击此处可从《金属热处理》下载免费的PDF全文 | |