Microstructure, Tensile Properties, and Corrosion Behavior of Die-Cast Mg-7Al-1Ca-xSn Alloys

被引：14
|
作者：
Wang, Feng [1 ]
Dong, Haikuo [1 ]
Sun, Shijie [1 ]
Wang, Zhi [1 ]
Mao, Pingli [1 ]
Liu, Zheng [1 ]
机构：
[1] Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Liaoning, Peoples R China
来源：
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2018年 / 27卷 / 02期
基金：
中国国家自然科学基金;
关键词：
corrosion resistance; die-cast; magnesium alloys; microstructure; tensile properties; AZ91 MAGNESIUM ALLOY; MECHANICAL-PROPERTIES; CREEP-BEHAVIOR; SN ADDITION; ELEVATED-TEMPERATURE; FRACTURE-BEHAVIOR; AL ALLOYS; PHASE; SR; STABILITY;
D O I：
10.1007/s11665-018-3145-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microstructure, tensile properties, and corrosion behavior of die-cast Mg-7Al-1Ca-xSn (x = 0, 0.5, 1.0, and 2.0 wt.%) alloys were studied using OM, SEM/EDS, tensile test, weight loss test, and electrochemical test. The experimental results showed that Sn addition effectively refined grains and intermetallic phases and increased the amount of intermetallic phases. Meanwhile, Sn addition to the alloys suppressed the formation of the (Mg,Al)(2)Ca phase and resulted in the formation of the ternary CaMgSn phase and the binary Mg2Sn phase. The Mg-7Al-1Ca-0.5Sn alloy exhibited best tensile properties at room temperature, while Mg-7Al-1Ca-1.0Sn alloy exhibited best tensile properties at elevated temperature. The corrosion resistance of studied alloys was improved by the Sn addition, and the Mg-7Al-1Ca-0.5Sn alloy presented the best corrosion resistance.
引用
收藏
页码：612 / 623
页数：12
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