Microstructure and mechanical properties of spray-deposited Al-Si-Fe-Mn-Cu-Mg alloys

被引：0
|
作者：
Wang, Feng
He, Jian-Ping
Yang, Bin
Cui, Hua
Duan, Xian-Jin
Xiong, Bai-Qing
Zhang, Ji-Shan
机构：
[1] State Key Lab. Adv. Met. and Mat., Univ. of Sci. and Technology Beijing, Beijing 100083, China
[2] Composite Materials Center, Gen. Res. Inst. for Non-ferrous Met., Beijing 100088, China
来源：
Hangkong Cailiao Xuebao/Journal of Aeronautical Materials | 2001年 / 21卷 / 01期
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摘要：
In this study, Al-20Si-5Fe-(0 [similar to] 3)Mn-3Cu-1Mg alloys were synthesized by spray atomization and deposition technique. The microstructures and mechanical properties of spray deposited hypereutectic Al-Si alloys were studied using scanning electron microscopy, transmission electron microscopy, X-ray diffraction and tensile tests. The effect of Mn content on the microstructural evolution of the high-silicon aluminum alloy has been examined. The result indicates that with the addition of 3% Mn to Al-20Si-5Fe-3Cu-1Mg alloy, the needle shape of Al-Si-Fe intermetallics is substituted by the particle shape of Al15 (FeMn)3Si2 phases. Furthermore, spray-deposited Al-20Si-5Fe-3Cu-1Mg alloy has greater strength than the powder metallurgy processed Al-20Si-3Cu-1Mg alloy at elevated temperature.
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