Effects of Homogenization Treatment on Microstructure and Properties of 7B50 Aluminum Alloy

Li Guofeng1; Zhang Xinming1; Zhu Hangfei1; Li Penghui1

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Effects of Homogenization Treatment on Microstructure and Properties of 7B50 Aluminum Alloy
Issue 5, Pages: 344-347(2008)
Published： 2008 ，
DOI：

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[1]李国锋,张新明,朱航飞,李鹏辉.均匀化处理对7B50铝合金的组织与性能的影响[J].特种铸造及有色合金,2008(05):344-347+324.

Li Guofeng1, Zhang Xinming1, Zhu Hangfei1, et al. Effects of Homogenization Treatment on Microstructure and Properties of 7B50 Aluminum Alloy. [J]. Special Casting & Nonferrous Alloys (5):344-347(2008)
[1]李国锋,张新明,朱航飞,李鹏辉.均匀化处理对7B50铝合金的组织与性能的影响[J].特种铸造及有色合金,2008(05):344-347+324. DOI：

Li Guofeng1, Zhang Xinming1, Zhu Hangfei1, et al. Effects of Homogenization Treatment on Microstructure and Properties of 7B50 Aluminum Alloy. [J]. Special Casting & Nonferrous Alloys (5):344-347(2008) DOI：

摘要

采用金相观察、X射线衍射和电子显微分析技术研究了均匀化处理对7B50高强铝合金的组织与性能的影响。研究结果表明

二级均匀化较一级均匀化使试验合金残留的非平衡共晶数量减少

成分分布更均匀

残留的非平衡共晶相主要是含铁的难溶共晶化合物;基体中二级均匀化较一级均匀化析出的第二相Al3Zr粒子有所长大

但分布均匀、弥散

经二级均匀化处理的合金的强度有所提高。

Abstract

Effects of homogenization treatment on microstructure and properties of 7B50 aluminum alloy have been investigated by optical microscope（OM）

XRD（X-ray diffraction） and SEM （scanning electron microscope）. The results indicate that the content of residual un-equilibrium eutectic phase with more uniform distribution which is mainly composed of immiscible Fe-eutectic phase in the alloy homogenized by two-step homogenization treatment is much less than that homogenized by one-step homogenization treatment. Compared with that precipitated from the alloy homogenized by one-step homogenization treatment

the secondary phase Al3Zr particle precipitated from the alloy homogenized by two-step homogenization treatment exhibits more dispersive and uniform distribution with slight coarse

which is helpful to the improvement of strength of the alloy.