65Mn钢表面激光熔覆Fe60-WC复合涂层组织及性能研究
Microstructure and Properties of Fe-WC Composite Coating on 65Mn by Laser Cladding
李艳 1王晨旭 1江怡蔚 1何静 1唐冉 1刘生龙 1琚中毅 1唐文健 1冷静健 1常发成 2刘博鑫 3刘秀清 3王云龙1
作者信息
- 1. 江苏大学材料科学与工程学院,江苏大学京江学院,江苏镇江 212013
- 2. 连云港锐远农业科技有限公司,江苏连云港 222299
- 3. 江苏畅颌汽车零部件有限公司,江苏连云港 222500
- 折叠
摘要
为了解决65Mn钢表面耐磨性不足问题,采用激光熔覆方法在65Mn钢上制备了Fe60-WC复合涂层.分别通过SEM、EDS、XRD和磨损试验机对熔覆层显微组织、物相组成、显微硬度及摩擦磨损性能进行分析.研究结果表明,在WC含量为30％时弹性模量最大为338.57 GPa.熔覆层组织主要由细小的等轴晶、胞状晶和柱状晶组成.复合涂层物相增加了WC、W2C、Fe3W3C、Fe6W6C等强化相,并且熔覆层显微硬度随WC含量的增加而增加,在WC添加量为40％时,平均硬度值约为基体的3倍.随着WC含量的增加磨损体积先减小后增大,当WC含量为30％时熔覆层磨损体积为Fe60熔覆层68％.
Abstract
To address the issue of inadequate wear resistance on the surface of 65Mn steel,a Fe60-WC composite coating was applied to 65Mn steel via laser cladding.The microstructure,phase composition,microhardness and friction and wear proper-ties of the cladding layer were analyzed by SEM,EDS,XRD and wear tester.The results show that the maximum elastic mod-ulus is 338.57GPa when the WC content is 30％.The microstructure of the cladding layer is mainly composed of fine equiaxed crystal,cellular crystal and columnar crystal.The strengthening phases,including WC,W2C,Fe3W3C,Fe6W6C are added in the phase of the composite coating.Meanwhile the microhardness of the cladding layer increases with the increasing of WC con-tent.When the WC content is 40％,the average hardness is about three times of the matrix.With the increasing of WC con-tent,the wear volume first decreases and then increases.When the WC content is 30％,the wear volume of the cladding layer is 68％of that of the Fe60 cladding layer.
关键词
激光熔覆/65Mn/复合涂层/显微组织/显微硬度/耐磨性Key words
laser cladding/65Mn/composite coating/microstructure/microhardness/wear resistance引用本文复制引用
出版年
2024
NETL
NSTL
万方数据