Effects of Sm on microstructures and mechanical properties of Mg-6Al-1.2Y-0.9Nd alloys

被引：0
|
作者：
Li, Kejie [1 ,2 ]
Li, Quanan [2 ]
Jing, Xiaotian [1 ]
Chen, Jun [2 ]
Zhang, Xingyuan [2 ]
Zhang, Qing [2 ]
机构：
[1] Xi'an University of Technology, Xi'an 710048, China
[2] Henan University of Science and Technology, Luoyang 471003, China
来源：
Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering | 2010年 / 39卷 / 01期
关键词：
Aluminum alloys - Samarium alloys - Binary alloys - Fracture - Magnesium alloys - Neodymium alloys - Samarium - Tensile strength;
D O I：
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中图分类号：
学科分类号：
摘要：
Microstructures and mechanical properties of Mg-6Al-1.2Y-0.9Nd magnesium alloy with Sm addition were investigated through OM, SEM, EDS and XRD. The results show that Sm combines firstly with Al to form dispersed, high-melting-point particles which are mainly Al2Sm phase. When the mass fraction of Sm is high from 1.5% to 2.0%, the acicular Mg12Nd phase appears in the alloy. With the increase of Sm content within the range from 0 to 2.0%, the tensile strength of alloys at ambient and elevated temperature firstly increases slightly, and then decreases; while the elongation decreases continuously. The tensile fracture of the alloy is quasi-cleavage failure with plastic characteristic.
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页码：96 / 100
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