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Chin J Mater Res  2009, Vol. 23 Issue (1): 27-31    DOI:
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Metallurgy bonding on the fabrication of shaped Al alloy foam
CHU Xuming; WANG Hui; HE Deping; HE Siyuan
School of Materials Science and Engineering; Southeast University; Nanjing 210096
Cite this article: 

CHU Xuming WANG Hui HE Deping HE Siyuan. Metallurgy bonding on the fabrication of shaped Al alloy foam. Chin J Mater Res, 2009, 23(1): 27-31.

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Abstract  

Equal high porosity shaped Al alloy foam were fabricated by metallurgy bonding of Al alloy foam flans in the shaped mould with enough equal TiH2 powder by two--step foaming (TSF) method. The microstructure of bonding joint between Al alloy foam was observed by using stereo--microscope and X--CT, and the tensile strength of the bonding joint was tested. The results show that the optimized temperature and foaming time for appropriate bonding are 700--900℃ and 250--800 s, respectively. The interface mechanical joining and the interface diffusion dominate the bonding mechanisms of Al alloy foam by TSF method. The metallurgy bonding tensile strength of shaped Al alloy foam increases with the decrease of the porosity of Al alloy foam, and the bonding strength is close to the Al alloy foam matrix when the porosity rises to 74.9%.

Key words:  metallic materials      shaped Al alloy foam      two--step foaming      interfacial structure      tensile strength     
Received:  28 July 2008     
ZTFLH: 

TG146

 
Fund: 

Supported by National Key Basic Research and Development Program of China No.2006CB601201 and National Natural Science Foundation of China No.50471031.

URL: 

https://www.cjmr.org/EN/     OR     https://www.cjmr.org/EN/Y2009/V23/I1/27

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