您目前所在的位置:首页 - 期刊简介 - 详细页面

铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 15    No. 6    December 2005

[PDF Download]    [Flash Online]

    

Microstructure and wear properties of tungsten carbide reinforced steel matrix composites
YOU Xian-qing(尤显卿)1, SONG Xue-feng(宋雪峰)1, REN Hao(任 昊)1
MA Jian-guo(马建国)2, HUANG Man-ping(黄曼平)2, ZHANG Cheng-jun(张成军)<

1. Institute of Material Science and Engineering, Hefei University of Technology, Hefei 230009, China; 
2. Anhui Architectural Engineering College, Hefei 230022, China

Abstract: WC(27%) reinforced steel matrix composites were produced by using an electroslag melting casting technique. The microstructure of the material was characterized using scanning electron microscopy(SEM), optical microscopy and X-ray diffraction(XRD). Energy dispersive spectroscopy(EDS) and transmission electron micro-scopy were performed to investigate the interfacial composition between WC particle and steel matrix. The results reveal that the WC particles are partially melted into the steel substrate. At the same time, a reaction layer was detected along with the periphery of WC particle, which significantly enhances the bonding strength of the interface. A slipping wear (high stress abrasion) test was utilized to understand the wear behavior of this material. Abrasive experiment displays a better wear resistance than unreinforced steel matrix when coarse WC particles are dispersed into it. The coarse particles provide greater wear-resistance than the fine particles and operatively takes on the most applied loads.  Additionally, the large particles have not been peeled during the wear process for a long time, which indicates the effect of interfacial reaction on wear behavior at the ambient temperature. A double carbide (Fe,W)3C is detected in the interface zone between particles and matrices using transmission electron microscopy.

 

Key words: electroslag melting casting;  WC particle;  interface reaction zone;  wear 

ISSN 1672-7029
CN 43-1423/U

主管:中华人民共和国教育部 主办:中南大学 中国铁道学会 承办:中南大学
湘ICP备09001153号 版权所有:《铁道科学与工程学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市韶山南路22号 邮编:410075
电 话:0731-82655133,82656174   传真:0731-82655133   电子邮箱:jrse@mail.csu.edu.cn