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]

    

Superplasticity and diffusion bonding of 
magnesium alloy
ZK60 YU Yan-dong(于彦东)1,2, JIANG Hai-yan(蒋海燕)2, LI Qiang(李 强)2
ZAI Chun-quan(翟春泉)2, DING Wen-jiang(丁文江)2 

1. School of Materials Science and Engineering, 
Harbin University of Science and Technology, Harbin 150040, China; 
2. Light Alloy Net Forming National Engineering Research Center, 
Shanghai Jiaotong University, Shanghai 200030, China

Abstract: Superplasticity of as-rolled ZK60 magnesium alloy sheets, with the average grain size of 8.2μm, was investigated at a strain rate of 5.56×10-4-5.56×10-2s-1 at 573-673K. The microstructure evolution during the superplastic deformation shows that the alloy deforms in a superplastic manner at the temperature from 573K to 673K. Diffusion bonding tests were carried out on the Gleeble-1500 testing machine and the specimens were successfully diffusion bonded at the superplastic temperature. The maximum specific strength is 0.82 at a bonding pressure of 10MPa for holding time 1h at 673K. The microstructures of the joints were observed through OM and SEM. There is no bond line visible in the original interfaces of sound joint with high specific strength.

 

Key words:  ZK60 magnesium alloy; lap bonding; superplasticity; specific strength

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