Effects of WC on the Microstructure and Wear Resistance of Fe-based Laser-cladding Coating

Ning Shuang; Bian Xiufang; Tian Yongsheng; Fu Chunxia; Gao Lili

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Effects of WC on the Microstructure and Wear Resistance of Fe-based Laser-cladding Coating
Issue 6, Pages: 422-424(2008)
Published： 2008 ，
DOI：

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[1]宁爽,边秀房,田永生,付春霞,高莉莉.WC对铁基激光熔覆层微观组织与磨损性能的影响[J].特种铸造及有色合金,2008(06):422-424+405-406.

Ning Shuang, Bian Xiufang, Tian Yongsheng, et al. Effects of WC on the Microstructure and Wear Resistance of Fe-based Laser-cladding Coating. [J]. Special Casting & Nonferrous Alloys (6):422-424(2008)
[1]宁爽,边秀房,田永生,付春霞,高莉莉.WC对铁基激光熔覆层微观组织与磨损性能的影响[J].特种铸造及有色合金,2008(06):422-424+405-406. DOI：

Ning Shuang, Bian Xiufang, Tian Yongsheng, et al. Effects of WC on the Microstructure and Wear Resistance of Fe-based Laser-cladding Coating. [J]. Special Casting & Nonferrous Alloys (6):422-424(2008) DOI：

摘要

采用同步送粉方式

在45号钢基材上制备了WC添加量分别为0、2.5%、3.5%、4.0%、4.5%和5.0%的铁基合金熔覆层。通过扫描电镜（SEM）、电子探针（EPMA）、X射线衍射（XRD）、显微硬度计、耐磨试验研究了不同WC加入量对熔覆层组织结构、硬度、磨损性能的影响。结果表明

WC的熔入主要影响熔覆层枝晶间组织

增加了W2C相。适量的WC加入可以形成大量细小的硬质相颗粒

从而提高铁基合金熔覆层的硬度与耐磨性。

Abstract

The laser cladding of Fe-based alloy with different content of WC including 0

2.5%

3.5%

4.0%

4.5% and 5.0%

on a 45 steel substrate has been performed by a laser with automatic powder feeding system.The microstructure

micro-hardness and wear resistance of the coating have been investigated by means of scanning electron microscope（SEM）

electron probe micro-analysis（EPMA）

X-ray diffraction（XRD）

micro-hardness tester and wear testing.The results indicate that the WC addition mainly change the interdendrite of the coating and form W2C phase.The hardness and wear resistance of the Fe-based alloy can be greatly improved as a result of the generation of amounts of finer particle with appropriate WC content.