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J Mater Sci Technol  2004, Vol. 20 Issue (04): 401-404    DOI:
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Microstructure Characteristics of Interaction Layer of Zn-Al Eutectic Alloy with Al2O3p/6061Al Composites
Jiuchun YAN, Zhiwu XU, Shixiong LÜ, Shiqin YANG
State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China
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Abstract  The interaction between Zn-Al eutectic alloy and Al2O3p/6061Al composites in the vacuum furnace was investigated. Great attention has been paid. to the elements diffusion, the microstructure and formation of the interface between Zn-Al eutectic alloy and Al2O3p/6061Al composites. Experimental results show that Zn-Al eutectic alloy has a good wetting ability to Al2O3p/6061Al composites and the wetting angle decreases with increasing the temperature in vacuum. After the interaction, an interaction layer forms between Zn-Al alloy and Al2O3p/6061Al composites. The phases in the interaction layer mainly consist of α-Al(Zn), Al2O3 and CuZn5 resulted from the diffusion of elements from the Zn-Al alloy. Several porosities distribute in the region near the interface of the Zn-Al alloy/interaction layer. The amount of shrinkage voids in the interacting layer is relevant to the penetration of Zn element into Al2O3p/6061Al composites which is a function of temperature. So it is necessary to lower heating temperature in order to limit the Zn penetration.
Key words:  Al2O3p/6061Al composites      Zn-Al eutectic alloy      Wetting      Interface microstructure      
Received:  01 January 1900     
Corresponding Authors:  Jiuchun YAN     E-mail:  cyan@hope.hit.edu.cn

Cite this article: 

Jiuchun YAN, Zhiwu XU, Shixiong LÜ, Shiqin YANG. Microstructure Characteristics of Interaction Layer of Zn-Al Eutectic Alloy with Al2O3p/6061Al Composites. J Mater Sci Technol, 2004, 20(04): 401-404.

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