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. 22    No. 4    April 2012

[PDF Download]    [Flash Online]    

    

Microstructure and tensile properties of Mg−Li−Al−Zn based alloys
with Ce addition
WU Li-bin, LIU Xu-he, WU Rui-zhi, CUI Chong-liang, ZHANG Jing-huai, ZHANG Mi-lin

Key Laboratory of Superlight Materials & Surface Technology of Ministry of Education,
Harbin Engineering University, Harbin 150001, China

Abstract:Mg−5Li−3Al−2Zn−xCe (x=0−2.5; mass fraction, %) alloys were prepared by casting, and heat treatments of homogenization at 300 °C and solid solution at 370 °C were carried out. The microstructure and tensile properties of as-cast alloys and their evolutions after solid solution were investigated. The results show that with the increase of Ce content, Al2Ce/Al3Ce precipitates are formed and the alloys mainly consist of α−Mg, Al2Ce, Al3Ce and AlLi phases, and the amount of AlLi and Al−Ce intermetallics decreases after solid solution. The content and morphology of the second phases have important effects on the mechanical properties of the alloys; the alloy with 1.0%Ce content exhibits excellent tensile strength. The tensile strength and elongation of Mg−5Li−3Al−2Zn−0.5Ce alloy is remarkably improved by the solution strengthening effect because of the addition of Ce.

 

Key words: Mg−Li alloy; Ce; heat treatments; solution strengthening; tensile properties

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