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Licensed Unlicensed Requires Authentication Published by De Gruyter September 10, 2015

The stabilising effect of oxides in foamed aluminium alloy scrap

  • G. S. Vinod Kumar , Francisco García-Moreno , John Banhart and Andrew Kennedy

Abstract

The expansion and stability of foams made from remelted aluminium alloy scrap has been studied. Foams made from scrap alloy contain oxide bi-films introduced from the swarf (machining chips and turnings) of LM26 alloy and these oxides act as stabilizing agents. The wettability of the oxides and hence the stabilisation is studied by varying the addition of Mg (0 to 2 wt.%) in the alloy. The viscosity of the melts with and without Mg addition is measured and correlated with foam expansion and stability. A detailed microstructural analysis of the base alloy and foam cell wall was conducted to obtain an understanding of the stabilisation behaviour of oxides.


*Correspondence address, Dr. G. S. Vinod Kumar, Associate Professor (Research), SRM Research Institute, R-31, 13th Floor, University Building, SRM University, Kattankulathur, Kancheepuram District, 603203 Tamil Nadu, India, Tel.: +914427417919, Fax: +914427453903, E-mail:

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Received: 2015-02-17
Accepted: 2015-04-01
Published Online: 2015-09-10
Published in Print: 2015-09-15

© 2015, Carl Hanser Verlag, München

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