Micro structures, tensile properties and corrosion behavior of die-cast Mg-4Al-based alloys containing La and/or Ce

被引：77
|
作者：
Zhang, Jinghuai [1 ,2 ]
Zhang, Deping [1 ]
Tian, Zheng [1 ]
Wang, Jun [1 ,2 ]
Liu, Ke [1 ,2 ]
Lu, Huayi [1 ]
Tang, Dingxiang [1 ]
Meng, Jian [1 ]
机构：
[1] Chinese Acad Sci, Changchun Inst Appl Chem, Key Lab Rare Earth Chem & Phys, Changchun 130022, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 489卷 / 1-2期
关键词：
Mg-Al-RE alloy; microstructure; tensile properties; corrosion;
D O I：
10.1016/j.msea.2007.12.024
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In order to study the properties of Mg-Al-RE (AE) series alloys, the Mg-4Al-4RE-0.4Mn (RE= La, Ce/La mischmetal or Ce) alloys were developed. Their microstructures, tensile properties and corrosion behavior have been investigated. The results show that the phase compositions of Mg-4Al-4La-0.4Mn alloy consist of alpha-Mg and Al11La3 phases. While two binary Al-RE (RE = Ce/La) phases, Al11RE3 and Al2RE, are formed in Mg-4Al-4Ce/La-0.4Mn alloy, and Al11Ce3 and Al2Ce are formed in Mg-4Al-4Ce-0.4Mn alloy. The optimal tensile properties and corrosion resistance are obtained in Mg-4Al-4Ce/La-0.4Mn alloy, the excellent tensile properties are mainly attributed to fine grains and grain boundaries containing fine secondary phases, and the good corrosion resistance is partly related to the presence of compact corrosion product film containing Al and Ce/La. (C) 2007 Elsevier B.V. All rights reserved.
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收藏
页码：113 / 119
页数：7
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