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. 17    Special 1    November 2007

[PDF Download]    [Flash Online]

    

Hot deformation behavior and microstructure evolution of titanium alloy Ti-Al-Zr-Sn-Mo-Si-Y
QI Yun-lian(戚运连)1, 2, XI Zheng-ping(奚正平)1, ZHAO Yong-qing(赵永庆)1,
WANG Rui-ning(王蕊宁)1, DU Yu(杜 宇)1, LUO Yuan-yuan(罗媛媛)

1. Northwest Institute for Nonferrous Metal Research, Xi’an 710016, China;
2. School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, China

Abstract:Samples of Ti-Al-Zr-Sn-Mo-Si-Y alloy were compressed on the Gleeble-1500 heat stimulation machine. The compression test was carried out in the temperature range from 800 ℃ to 1 100 ℃ and strain rate range from 0.001 s−1 to 10 s−1. Stress-strain behavior and variation of microstructure of the alloy during hot compression were investigated. The experimental results show that the alloy is sensitive to temperature and strain rate, and the flow softening behavior is more obvious with the decrease of deformation temperature. At higher strain rate, discontinuous yielding is observed in β phase region. When deformed in α+β phase region, with the increment of deformation temperature, the lamellar α structures globularization is more quick and more uniform. When deformed in β phase region, coarse β grains can be got because of high deformation temperature.

 

Key words: Ti-Al-Zr-Sn-Mo-Si-Y alloy; high temperature titanium alloy; hot deformation; microstructure

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