Microstructure and wear properties of Fe-based hardfacing coating reinforced by TiC particles

被引：59

作者：

Wang, XH ^{[1
]}

Zou, ZD ^{[1
]}

Qu, SY ^{[1
]}

Song, SL ^{[1
]}

机构：

[1] Shandong Univ, Sch Mat Sci & Engn, Jinan 250061, Peoples R China

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2005年 / 168卷 / 01期

基金：

高等学校博士学科点专项科研基金;

关键词：

hardfacing; titanium carbide; wear; microstructure;

D O I：

10.1016/j.jmatprotec.2004.11.001

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the present study, Fe-based hardfacing coating reinforced by TiC particles was obtained by manual shielded metal arc welding (SMAW) in which H08A bare electrode was coated with fluxes, to which different measures of ferrotitanium, rutile, graphite, calcium carbonate and calcium fluoride had been added. The microstructure and wear properties of the hardfacing coating were studied by means of scanning electron microscopy (SEM), transmission electron microscopy (TEM), an X-ray diffiractometer (XRD) and a wear test. The results indicate that TiC particles are produced by direct metallurgical reaction between ferrotitanium and graphite during welding. TiC particles are uniformly dispersed in the matrix of lath martensite and retained austenite with particle sizes in the range 3-5 mu m. Fe-based hardfacing coating reinforced by TiC particles is found to possess better wear resistance and lower coefficient of friction than that of AISI 1045 steel substrate. (c) 2004 Elsevier B.V. All rights reserved.

引用

页码：89 / 94

页数：6

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