Effects of Ce and Sb on the microstructure and properties of AZ91D magnesium alloy prepared by the EPC process

被引：17
作者：
Li Jiqiang [1 ,2 ]
Dong Xuanpu [1 ,2 ]
Fan Zitian [1 ,2 ]
Wang Yuanqing [1 ,2 ]
机构：
[1] Huazhong Univ Sci & Technol, State Key Lab Mat Proc, Wuhan 430074, Peoples R China
[2] Huazhong Univ Sci & Technol, State Key Lab Die & Mould Technol, Wuhan 430074, Peoples R China
来源：
RARE METALS | 2008年 / 27卷 / 01期
基金：
中国国家自然科学基金;
关键词：
AZ91D; Ce; Sb; microstructure; mechanical properties;
D O I：
10.1016/S1001-0521(08)60027-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effects of small amounts of cerium and antimony additions on the microstructure and the mechanical properties of AZ91D (Mg-9Al-Zn) based alloy were researched via the expendable pattern casting (EPC) process. The results show that the microstructure is obviously refined and the tensile strength of the AZ91D based alloy at ambient temperature is significantly improved. When compared to AZ91D, the AZ91D-1.0%Ce-0.4%Sb alloy has higher ultimate tensile strength and elongation. Its ultimate tensile strength and elongation are enhanced by 39% and 47%, respectively. The morphology of the tensile fracture of the AZ91D-1.0%Ce-0.4%Sb alloy has more characteristics of quasi-cleavage. This indicates that it has had a larger plastic deformation before failure. The tensile strength and elongation decrease with the increase of Ce and Sb contents because of the coarsening and volume increase of CeSb and Al11Ce3 phases.
引用
收藏
页码：41 / 45
页数：5
相关论文
共 15 条
[1]  
Gale W. F., 2004, SMITHELLS METALS REF
[2]  
Huang ZH, 2004, T NONFERR METAL SOC, V14, P311
[3]   Automotive applications of magnesium alloys [J].
Kaneko, T ;
Suzuki, M .
MAGNESIUM ALLOYS 2003, PTS 1 AND 2, 2003, 419-4 :67-72
[4]  
KLEINER S, 2002, J LIGHT MET, V2, P277, DOI DOI 10.1016/S1471-5317(03)00012-9
[5]  
[刘子利 Liu Zili], 2006, [材料研究学报, Chinese Journal of Materials Research], V20, P186
[6]  
Lü YZ, 2000, MAT SCI ENG A-STRUCT, V278, P66
[7]   Magnesium - Properties - applications - potential [J].
Mordike, BL ;
Ebert, T .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2001, 302 (01) :37-45
[8]  
NAYEBHSHEMI AA, 1998, PHASE DIAGRAMS BINAR
[9]   Development of creep resistant magnesium diecasting alloys [J].
Pekguleryuz, MO .
MAGNESIUM ALLOYS 2000, 2000, 350-3 :131-139
[10]   Current and future use of magnesium in the automobile industry [J].
Schumann, S ;
Friedrich, H .
MAGNESIUM ALLOYS 2003, PTS 1 AND 2, 2003, 419-4 :51-56
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