Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

您目前所在的位置:首页 - 期刊简介 - 详细页面

中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 12    No. 6    December 2002

[PDF Download]        

    

Grain refinement effects of Al based alloys with low
titanium content produced by electrolysis
LIU Zhi-yong(刘志勇)1, WANG Ming-xing(王明星)1,
WENG Yong-gang(翁永刚)1,SONG Tian-fu(宋天福)1,
XIE Jing-pei (谢敬佩)2, HUO Yu-p

1. Key Laboratory of Materials Physics,
Zhengzhou University, Zhengzhou 450052, China;
2. Department of Materials Science and Engineering,
Luoyang Institute of Technology,Luoyang 471039, China

Abstract:A series of Al based alloys with low titanium contents (mass fraction) from 0.178% to 0.526% were directly produced in ordinary industrial electrolyzer. The electrolyzing results show that producing Al based alloys with titanium contents of less than 0.30% without great loss of electrolysis efficiency is possible. The quantitative analysis shows that this method has a great refining effect on transiting the coarse columnar grains in pure Al to equiaxed grains. The grain sizes decrease with the increase of titanium content and tend to a low limit at about 130μm. During the solidification, the non-equilibrium distribution of titanium leads to a great growth-restricting effect and a constitutional under-cooling zone in front of the growing liquid/solid interface. 

 

Key words:   aluminum alloy; low titanium content; electrolysis; grain refinement

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

主管:中国科学技术协会 主办:中国有色金属学会 承办:中南大学
湘ICP备09001153号 版权所有:《中国有色金属学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市岳麓山中南大学内 邮编:410083
电 话:0731-88876765,88877197,88830410   传真:0731-88877197   电子邮箱:f_ysxb@163.com