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. 24    No. 1    January 2014

[PDF Download]    [Flash Online]    

    

Effect of Ce on morphology of α(Al)-Al2Cu eutectic in Al-Si-Cu alloy
Maja VON?INA1, Jo?ef MEDVED1, Tonica BON?INA 2, Franc ZUPANI?2

1. Department for Materials and Metallurgy, Faculty of Natural Science and Engineering,
University of Ljubljana, A?ker?eva 12, SI-1000 Ljubljana, Slovenia;
2. University of Maribor, Faculty of Mechanical Engineering, Smetanova 17, SI-2000 Maribor, Slovenia

Abstract:The effect of Ce addition on the morphology of the α(Al)-Al2Cu eutectic in Al-Si-Cu alloy was investigated using thermal analysis, light microscopy, scanning electron microscopy, focused ion beam and energy dispersive analysis. The results show that the eutectic α(Al)-Al2Cu forms within small space between dendrites, silicon and AlSiFeMn plates. Eutectic Al2Cu is not lamellar but degenerated. However, Al2Cu in Ce-modified alloys is more compact. Ce partially dissolves in Al2Cu, which is a viable reason for the formation of coarser Al2Cu. The addition of Ce also increases the microhardness of the α(Al)-Al2Cu eutectic by almost 10% compared with the basic Al-Si-Cu alloy.

 

Key words: Al-Si-Cu alloy; cerium; eutectic; microstructure; focused ion beam

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