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. 12    No. 4    August 2002

[PDF Download]    [Flash Online]

    

Warm compacted NbC particulate
reinforced ironbase composite(Ⅱ)

——Microstructure and properties

LI Yuan-yuan(李元元), XIAO Zhi-yu(肖志瑜), 
NGAI Tungwai Leo(倪东惠), XIA Wei(夏  伟),
CHEN Wei-ping(陈维平)

Advanced Metallic Materials Research and Processing
Technology Center, South China University of Technology,
Guangzhou 510640, China

Abstract:Effects of different sintering temperature and sintering time on the relative density of the sintered compacts were studied to obtain the optimal sintering parameters for the fabrication of NbC particulate reinforced iron-base composite. With optimal sintering temperature of 1280℃ and sintering time of 80min, wear-resisting, high density NbC particulate reinforced iron-base composites can be obtained using warm compaction powder metallurgy. The microstructure, relative density, mechanical properties and tribological behaviors of the sinter ed composites were studied. The results indicate that the mechanical properties of the sintered compacts were closely related to the sintered density. The iron-base composite materials with different combinations of mechanical properties and tribological behaviors were developed for different applications. One of the dev eloped composite, which contains 10%NbC, possesses a high strength of 815MPa with a remarkable friction and wear behaviors. The other developed composite, which contains 15%NbC, possesses a lesser strength of 515MPa but with excellent friction and wear behaviors.

 

Key words: iron-base composite; NbC particulate; mechanical property; tribological behaviors

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