[1]朱继祥,雷 声,李帅,等.WC含量对铁基复合涂层组织与磨损性能的研究[J].南京师大学报(自然科学版),2021,44(01):28-34.[doi:10.3969/j.issn.1001-4616.2021.01.005]
　Zhu Jixiang,Lei Sheng,Li Shuai,et al.Research on the Microstructure and Wear Properties ofIron-Based Composite Coating with WC[J].Journal of Nanjing Normal University(Natural Science Edition),2021,44(01):28-34.[doi:10.3969/j.issn.1001-4616.2021.01.005]
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WC含量对铁基复合涂层组织与磨损性能的研究()
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《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

卷:
第44卷
期数:
2021年01期
页码:
28-34
栏目:
·物理学·
出版日期:
2021-03-15

文章信息/Info

Title:
Research on the Microstructure and Wear Properties ofIron-Based Composite Coating with WC
文章编号:
1001-4616(2021)01-0028-07
作者:
朱继祥1; 雷 声1; 2; 李帅1; 吴彦博1; 朱银锋1; 任悦3; 刘亚峰1; 许海丽1
(1.安徽建筑大学机械与电气工程学院,安徽 合肥 230601)(2.安徽省工程机械智能制造重点实验室,安徽 合肥 230601)(3.北京理工大学材料学院,北京 100081)
Author(s):
Zhu Jixiang1; Lei Sheng1; 2; Li Shuai1; Wu Yanbo1; Zhu Yinfeng1; Ren Yue3; Liu Yafeng1; Xu Haili1
(1.School of Mechanical and Electrical Engineering,Anhui Jianzhu University,Hefei 230601,China)(2.Key Laboratory of Intelligent Manufacturing of Construction Machinery of Anhui Province,Hefei 230601,China)(3.School of Materials Science and Engineering,Beijing Institute of Technology,Beijing 100081,China)
关键词:
激光熔覆; 磨损性能; WC颗粒; 铁基合金; 微观组织
Keywords:
laser cladding; wear performance; WC particles; Fe-based alloy; microstructure
分类号:
TG148
DOI:
10.3969/j.issn.1001-4616.2021.01.005
文献标志码:
A
摘要:
为了解决导辊零部件表面易磨损失效问题,采用激光熔覆在GCR15轴承钢表面制备了不同WC含量铁基复合熔覆层. 分别通过SEM、EDS、XRD和磨损试验机对熔覆层微观组织、元素分布、物相组成和耐磨性能进行分析. 结果发现,WC的添加量对合金熔覆层组织及性能影响较大. 熔覆层与GCR15轴承钢基材冶金结合良好,熔覆层组织主要由胞状晶和等轴树枝晶组成,物相以Fe3W3C、Fe2W2C为主. 熔覆层平均显微硬度随WC含量的增加而增加,其中WC含量为质量分数50%的熔覆层平均显微硬度最高,约为基材的3倍. 在耐磨性能方面,磨损机理主要为磨料磨损和氧化磨损. 随着熔覆层WC质量分数的增加,磨损量先减小后变大,WC含量为质量分数30%的熔覆层耐磨性能最佳.
Abstract:
To solve the problem of serious wear and tear failure of guide roller parts,Fe-based composite cladding layers with different contents of WC were prepared for the surface of GCR15 bearing steel by laser cladding technology. The microstructure,element distribution,phase composition and wear resistance of the cladding layer were analyzed by SEM,EDS,XRD and wear tester. The results show that the addition of WC has an apparent influence on the microstructure and properties of the alloy cladding layer. The cladding layer has good metallurgical bonding with GCR15 bearing steel substrate. The microstructure of cladding layer is mainly composed of cellular crystals and equiaxed dendrites,and the main phase of it is Fe3W3C and Fe2W2C. Compared with the substrate,the average microhardness of the cladding layer increases obviously with the increase of WC content. When the content of WC is 50 wt.%,the average microhardness of cladding layer is the highest,which is about three times higher than that of GCR15 bearing steel substrate. In terms of wear resistance,the wear mechanism is mainly including abrasive wear and oxidation with the increase of WC mass fraction of cladding layer,the amount of wear decreases and then increases. The cladding layer with the 30 wt.% WC content has the best wear resistance.

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备注/Memo

备注/Memo:
收稿日期:2020-07-03.
基金项目:国家自然科学基金项目(51877001)、 安徽省教育厅自然科学重点资助项目(kj2016A146)、 安徽建筑大学科研项目(横20180022、AJ-CXY-KF-17-38).
通讯作者:雷声,博士,教授,研究方向:材料成形技术. E-mail:leish1964@vip.126.com
更新日期/Last Update: 2021-03-15