激光功率对高速熔覆431涂层耐磨耐腐性能影响  

Effect of Laser Power on Wear and Corrosion Resistance of High-Speed Cladding 431 Coating

作　　者：洪富民 魏天路 Hong Fumin;Wei Tianlu(College of Mechanical Engineering,Anhui Science and Technology University,Fengyang,Anhui 233100,China;College of Mechanical and Vehicle Engineering,Bengbu University,Bengbu,Anhui 233000,China)

机构地区：[1]安徽科技学院机械工程学院,安徽凤阳233100 [2]蚌埠学院机械与车辆工程学院,安徽蚌埠233000

出　　处：《黑龙江工业学院学报（综合版）》2024年第9期128-132,共5页Journal of Heilongjiang University of Technology(Comprehensive Edition)

基　　金：蚌埠学院应用型项目(项目编号:2024YYX01QD)。

摘　　要：通过对45#钢基材表面高速激光熔覆431不锈钢涂层的组织分析与耐磨耐腐蚀性能进行研究,旨在探讨不同激光功率下的影响规律,为优化涂层制备工艺提供理论支持。分别制备了功率为6000W、5500W、5000W、4500W、4000W、3500W六种样品,在功率3500W时涂层出现粉末未融化的缺陷。对样品涂层进行金相组织、耐腐蚀性能、力学性能分析,结果表明功率在4000W时耐腐蚀性能最佳(R_(P)值为964848Ω,I_(corr)值为0.132μA·cm^(-2)),耐磨性能在功率为5500W、5000W、4500W、4000W范围内最佳(摩擦系数平均在0.6左右,磨损量平均在1.6mg左右)。In this paper,the microstructure and wear resistance of 431 stainless steel coating on the surface of 45#Steel substrate by high-speed laser cladding were studied,aiming to explore the influence rule under different laser power,and provide theoretical support for optimizing the coating preparation process.Six kinds of samples with power of 6000W,5500W,5000W,4500W,4000W and 3500W were prepared respectively.At the power of 3500W,the coating powder did not melt.The microstructure,corrosion resistance and mechanical properties of the sample coating were analyzed.The results showed that the corrosion resistance was the best when the power was 4000W(R_(P)value was 964848Ω,I_(corr)value was 0.132μA·cm^(-2)).The wear resistance is best in the power range of 5500W,5000W,4500W,4000W(the average friction coefficient is about 0.6,the average wear amount is about 1.6mg).

关 键 词：45#钢 431不锈钢涂层 高速激光熔覆 耐腐蚀性能 耐磨性能 

分 类 号：TG174.44[金属学及工艺—金属表面处理] TG142.71[金属学及工艺—金属学]