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Preparation Technology of Al-Fe-V-Si Heat-Resistant Aluminum Alloy with Single Roller Spinning Method

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Abstract:

High strength aluminum alloy is mainly traditional alloy hypoeutectic composition, containing the solid solubility of alloy elements atomic fraction is greater than 2, and reached the alloy trengthening effect by the precipitation of intermetallic compounds in the process of aging. But in more than 150°C, the precipitated phases coarsening, the material performance dramatically, thus limiting its use scope. In the preparation process, the planar flow casting process will melt thrown by 35-80um thick slices with, because the cooling speed can reach 105K/s the process of melt, so the microstructure is very fine, after extrusion. Grain size of about 1um, precipitates spherical and uniform distribution, the size of about 50nm, Al12(Fe,V)3Si phase coarsening rate is low, so the alloy has comprehensive mechanical performance and excellent high temperature stability.

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Periodical:

Applied Mechanics and Materials (Volumes 433-435)

Pages:

2081-2084

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.433-435.2081

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Online since:

October 2013

Authors:

Jin Jun Tang, Zhao Hui Gong, Liang Jun Fei, Xiu Rong Zhu, Hong Xia Shi

Keywords:

Al-Fe-V-Si, Heat-Resistant Aluminum Alloy, Mechanical Property, Microstructure

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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