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


Transactions of Nonferrous Metals Society of China

Vol. 12    No. 3    June 2002

[PDF Download]        [Flash Online]


Laser resolidification of Zn-rich
Zn-Ag peritectic alloys
ZHANG Guo-dong(张国栋)1, LI Zhi-yuan(李志远)1,
XU Wei(许  伟)2,LI Yi(李  毅)2

1. School of Materials Science and Engineering, 
Huazhong University of Science and Technology, Wuhan 430074, China;
2. Department of Materials Science,
National University of Singapore, Singapore 119260

Abstract:Laser remelting experiments were performed by a 1.0kW continuous CO2 laser to investigate the rapid solidification behavior of Zn-rich Zn-Ag peritectic alloys. Three kinds of microstructures occurrs with the varying of laser scanning speed and Ag content in the alloys. It is mainly plate-like single-phase cellular η when the Ag content was lower than 1.8% (mole fraction). As the Ag content increased, instead of typical structure of primary dendrites o f ε surrounded by peritectic η, a two-phase plate-like η+ε with primary dendrites of ε is found when the laser scanning speed was higher than a critical value. Intercellular spacing of cellular η or interphases pacing of two-phase couple growth η+ε decreases with increasing laser scanning speed.


Key words: Zn-Ag alloys; laser remelting; peritectic; couple growth

ISSN 1004-0609
CN 43-1238/TG

ISSN 1003-6326
CN 43-1239/TG

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