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. 6    December 2003

[PDF Download]    [Flash Online]

    

Small angle X-ray scattering 
used in precipitation in AlZnMgCuLi alloy
DU Zhi-wei(杜志伟)1, ZHOU Tie-tao(周铁涛)1, 
LIU Pei-ying(刘培英)1, CHEN Chang-qi(陈昌麒)1, ZHONG Hao(钟 皓)2, HONG Xin-guo(洪新国)

1. School of Materials Science and Engineering, 
Beijing University of Aeronautics and Astronautics, Beijing 100083, China;
2. Beijing Synchrotron Radiation Facility Division,Institute of High Energy Physics, 
Chinese Academy of Sciences, Beijing 100039, China

Abstract:Small angle X-ray scattering has been used to study the variation of microstructure parameters in an Al-Zn-Mg-Cu-Li alloy aged at various temperatures for various durations. Coarsening of precipitates was studied by analyzing the curve of kinetics strength vs the cube of radius. The results show that the coarsening of precipitates conforms to LSW principle. In addition, the characteristic of s3J(s) vs s curves was analyzed. The results show that the curves for samples aged at 160℃ for various durations(24, 48 and 96h) have negative deviation, which maybe results in the formation of certain new precipitate. In the other aging treatment states, the curves conform to Porod principle which means there is sharp boundary between the precipitates and matrix.

 

Key words: Al-Zn-Mg-Cu-Li alloys; precipitate; microstructure parameters; aging; small angle X-ray scattering

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