摘要
为了研究WC质量分数对Ni60粉末激光熔覆涂层性能的影响,采用激光熔覆技术在Q235碳素工具钢上制备了WC+Ni60的复合涂层,并进行了理论分析和实验验证,取得了熔覆层几何形貌、稀释率、显微组织及硬度方面的数据。结果表明,添加WC后,涂层外观成形良好,在涂层硬度上有明显的提升效果;稀释率随着WC质量分数的增加整体呈现先升高后降低的趋势;当WC质量分数为0.4时为合适的粉末配比,不但能保证微观组织致密、枝晶尺寸均匀,也可避免颗粒和气孔对涂层质量造成的影响,并保证了2种熔覆材料融合性和涂层整体硬度。此研究结果对激光熔覆添加WC的Ni基复合涂层制备有一定指导作用。
In order to investigate the effect of WC mass fraction on the properties of Ni60 powder laser cladding coating,the WC and Ni60 composite coating was prepared on Q235 carbon tool steel by laser cladding technology,and the theoretical analysis and experimental verification were carried out.The date of geometrical morphology,dilution rate,microstructure and hardness of cladding layer were obtained.The results show that,after adding WC,the coating has good appearance and the hardness of coating can be improved obviously.The dilution rate increased firstly and then decreased with the increase of WC mass fraction.When the WC mass fraction is 0.4,the appropriate powder ratio can not only ensure the dense microstructure and uniform dendrite size,but also avoid the influence of particles and pores on the coating quality,and ensure the fusion of two coating materials and the overall hardness of the coating.The results of this study have a certain guiding role for the preparation of Nibased composite with WC added by laser melting coating.
作者
王杉杉
师文庆
吴腾
程才
朱志凯
陈熙淼
谢林圯
何宽芳
WANG Shanshan;SHI Wenqing;WU Teng;CHENG Cai;ZHU Zhikai;CHEN Ximiao;XIE Linyi;HE Kuanfang(College of Electronics and Information Engineering,Guangdong Ocean University,Zhanjiang 524088,China;School of Mechanical and Electrical Engineering and Automation,Foshan Institute of Science and Technology,Foshan 528225,China)
出处
《激光技术》
CAS
CSCD
北大核心
2023年第4期463-468,共6页
Laser Technology
基金
国家自然科学基金资助项目(62073089)
广东省教育厅普通高校重点领域专项项目(2020ZDZX2061)
广东海洋大学研究生“一支部一品牌”“一党员一旗帜”创建项目。
关键词
激光技术
激光熔覆
WC质量分数
微观组织
硬度
laser technique
laser cladding
WC mass fraction
microstructure
hardness
