激光熔覆VN增强Fe基合金涂层组织和耐磨性能研究
Microstructure and Wear Resistance of VN-reinforced Iron-base Alloy Coating Fabricated by Laser Cladding Technology
晁永礼 1张浦津 1丁林1
作者信息
- 1. 皖西学院 机械与车辆工程学院,安徽 六安 237012
- 折叠
摘要
采用激光熔覆技术在Q235 钢上制备了VN增强Fe基合金涂层.检测了涂层的微观组织、硬度和耐磨性.结果表明:VN增强Fe基合金涂层组织由α-Fe、Cr23C6、Cr7C3、VN和FeV组成,弥散的FeV和VN使涂层中粗大枝晶断裂成细小均匀的短棒状枝晶和等轴晶;与Fe基合金涂层相比,VN增强Fe基合金涂层的硬度提高了27.28%,磨损失重降低了42.79%.
Abstract
VN-reinforced iron-base alloy coating was fabricated on Q235 steel by a laser cladding technology.The coating was tested for microstructure,hardness and wear resistance.The results showed that(a)the VN-reinforced iron-base alloy coating consisted of α-Fe、Cr23 C6、Cr7 C3、VN and FeV,and the dispersed FeV and VN caused coarse dendrites to break down into fine uniform short-rod-like dendrites and equiaxed crystals;and(b)the hardness of the VN-reinforced iron-base alloy coating was 27.28%higher than that of the iron-base alloy coating,and the wear-induced weight loss of the VN-reinforced iron-base alloy coatings was 42.79%less than that of the iron-base alloy coating.
关键词
激光熔覆/Fe基合金/VN/耐磨性Key words
laser cladding/iron-base alloy/VN/wear resistance引用本文复制引用
基金项目
安徽省大学生创新训练项目(S202210376140)
皖西学院大学生创新训练项目(wxxy2022084)
出版年
2024
NETL
NSTL
万方数据