Heat resistance of Mg-Zn-Al-Ca alloy castings

被引：0
|
作者：
Anyanwu, I.A. [1 ]
Kamado, S. [2 ]
Honda, T. [1 ]
Kojima, Y. [2 ]
Takeda, S. [3 ]
Ishida, T. [3 ]
机构：
[1] Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan
[2] Department of Mechanical Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan
[3] Magnesium Manufacturing Division, Manufacturing Section, Ahresty Corporation, 2-3-9 Sakashita, Itabashi-ku, Tokyo, Japan
来源：
Materials Science Forum | 2000年 / 350卷
关键词：
Castings - Creep - Heat resistance - Magnesium compounds - Microstructure - Tensile strength;
D O I：
10.4028/www.scientific.net/msf.350-351.73
中图分类号：
学科分类号：
摘要：
New Mg-Zn-Al-Ca based alloys are evaluated for possible application at elevated temperatures. The as-cast microstructures of these alloys show that the amount of eutectic compounds increases with an increase in Zn+Al content, and the compounds are found to be mainly Mg32(Al,Zn)49 or MgZn. High temperature tensile strength and 0.2% proof strength increase with an increase in the amount of compounds. The creep properties of the alloys are far superior to those of conventional die-cast AZ91D alloy. However, the presence of soft Mg17Al12 compound deteriorates the creep properties of high Al containing alloys.
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页码：73 / 78
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