Manufacturing process of dispersed intermetallic compounds Al alloy composites by using porous nickel

A new process is proposed to fabricate an intermetallic compound-reinforced aluminum alloy matrix composite using the reaction between porous nickel and molten aluminum alloy. The intermetallic compound-reinforced aluminum alloy composite was manufactured with the infiltration process method. Porous...

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Bibliographic Details
Published in:Journal of composite materials 2014-08, Vol.48 (18), p.2289-2295
Main Authors: Choi, YB, Matsugi, K, Sasaki, G
Format: Article
Language:English
Subjects:
Aluminum base alloys
Delaminating
Dispersions
Infiltration
Intermetallic compounds
Intermetallics
Nickel
Thermal expansion
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Summary:A new process is proposed to fabricate an intermetallic compound-reinforced aluminum alloy matrix composite using the reaction between porous nickel and molten aluminum alloy. The intermetallic compound-reinforced aluminum alloy composite was manufactured with the infiltration process method. Porous nickel reacted with the molten aluminum alloy at 973 K, and the intermetallic compound of Al3Ni was generated on the surface of the porous nickel. The generated intermetallic compound Al3Ni is delaminated due to different thermal expansion coefficient with nickel and moves in the direction of aluminum matrix. The effects of processing variables such as specific surface area of porous nickel, holding time after infiltrated molten aluminum alloy, and cooling rate on the formation and dispersion behavior of Al3Ni were investigated.
ISSN:0021-9983
1530-793X
DOI:10.1177/0021998313497496