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. 13    No. 4    August 2003

[PDF Download]    [Flash Online]

    

Forming of tubes and bars of alumina/LY12 composites by liquid extrusion process
QI Le-hua(齐乐华)1, LI He-jun(李贺军)2,
CUI Pei-ling(崔培玲)3, SHI Zhong-ke(史忠科)3

1. College of Mechanical and Electrical Engineering, 
Northwestern Polytechnical University, Xi'an 710072,China;
2. College of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China;
3. Department of Automatic Control, 
Northwestern Polytechnical University, Xi'an 710072, China

Abstract:Tube and bar products of aluminum alloy composites reinforced by alumina short-fiber were formed in a single process with liquid extrusion technology. The microstructure verifies that the reinforcing effect is obvious in the deformation direction since fibers are distributed along this direction, which is resulted from the flow and crystallization under pressure of liquid metal and large plastic deformation of solidified metal in the process. The interface between fiber and matrix belongs to mechanical bonding. The fractograph demonstrates ductile mode. Liquid extrusion process opens up a new way for fabricating tube, bar and shaped products.

 

Key words:  liquid metal extrusion; aluminum matrix composite; tube and bar

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