浇注温度对液固铸造复合铝锭界面组织与强度的影响

李滔; 王顺成; 戚文军; 郑开宏; 谢红聚; 谢建雄

doi:10.15980/j.tzzz.2015.05.020

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浇注温度对液固铸造复合铝锭界面组织与强度的影响
Effect of Pouring Temperature on Interface Microstructure and Bonding Strength of 4343/3003/4343 Aluminum Alloy Cladding Ingot Prepared by Liquid-solid Casting
2015年35卷第5期页码：520-524
纸质出版日期： 2015 ，
DOI： 10.15980/j.tzzz.2015.05.020

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[1]李滔,王顺成,戚文军,郑开宏,谢红聚,谢建雄.浇注温度对液固铸造复合铝锭界面组织与强度的影响[J].特种铸造及有色合金,2015,35(05):520-524.

Li Tao, Wang Shuncheng, Qi Wenjun, et al. Effect of Pouring Temperature on Interface Microstructure and Bonding Strength of 4343/3003/4343 Aluminum Alloy Cladding Ingot Prepared by Liquid-solid Casting[J]. Special Casting & Nonferrous Alloys, 2015,35(5):520-524.
[1]李滔,王顺成,戚文军,郑开宏,谢红聚,谢建雄.浇注温度对液固铸造复合铝锭界面组织与强度的影响[J].特种铸造及有色合金,2015,35(05):520-524. DOI： 10.15980/j.tzzz.2015.05.020.

Li Tao, Wang Shuncheng, Qi Wenjun, et al. Effect of Pouring Temperature on Interface Microstructure and Bonding Strength of 4343/3003/4343 Aluminum Alloy Cladding Ingot Prepared by Liquid-solid Casting[J]. Special Casting & Nonferrous Alloys, 2015,35(5):520-524. DOI： 10.15980/j.tzzz.2015.05.020.

摘要

采用液固铸造法制备4343/3003/4343复合锭

研究了浇注温度对复合锭的界面组织和结合强度的影响

讨论了复合锭的界面结合机理。结果表明

在725

50℃下浇注4343/3003/4343复合锭

复合锭的复合界面表现为冶金结合

由Al-Si固溶体层和Si、Mn元素扩散层构成

Al-Si固溶体层厚薄均匀

Si、Mn元素的扩散距离分别为10μm和32μm

复合界面的结合强度高于3003铝合金的抗拉强度。液固铸造4343/3003/4343铝合金复合锭的界面复合机理为:4343铝合金熔体首先在3003铝合金复合锭表面急冷形成Al-Si固溶体

Al-Si固溶体中的Si和3003铝合金中的Mn再相互扩散

形成冶金结合。

Abstract

The 4343/3003/4343 aluminum alloy cladding ingots were prepared by solid-liquid casting.Effects of pouring temperature on the interface microstructure and bonding strength of the cladding ingots were investigated by OM（optical microscopy）

SEM（scanning electron microscopy）

XRD（X-ray diffraction）.The bonding mechanism of the cladding ingots was described.The results show that the desirable metallurgical bonding compound interface with clear and straight can be observed with pouring4343 aluminum alloy at 725

50 ℃.The metallurgical bonding interface of cladding ingots consists of Al-Si solution layer and Si

Mn diffusion layer.The thickness of Al-Si solution layer exhibits uniform

and the diffusion distance of Mn and Si reaches 10μm and 32μm

respectively.The bonding strength of cladding ingots is higher than those of the 3003 aluminum alloy.The bonding mechanism of 4343/3003 interface is that the Al-Si solution layer is formed when the 4343 aluminum alloy melt with high temperature is contacted with the 3003 aluminum alloy

and Si in the Al-Si solution layer and the Mn in 3003 aluminum alloy are diffused to each other to generate the metallurgical bonding interface with high bonding strength.