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The stabilising effect of oxides in foamed aluminium alloy scrap

  • G. S. Vinod Kumar , Francisco García-Moreno , John Banhart and Andrew Kennedy
Published/Copyright: September 10, 2015
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 106 Issue 9

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.

Keywords: Closed cell foams; Scrap aluminium alloys; Foam stabilisation; Cell wall; X-ray radioscopy
*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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https://doi.org/10.3139/146.111255
Keywords for this article
Closed cell foams; Scrap aluminium alloys; Foam stabilisation; Cell wall; X-ray radioscopy

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Kinetics for gas–solid reactions involving dual-reaction interfaces
  5. Preparation of 6N grade silicon ingot by combined purification processes from waste silicon cutting sludge
  6. Material characterisation to identify the rheological behaviour for powder injection moulding
  7. Isothermal section of Nd–Mn–As phase diagram at 800 °C
  8. Influence of bath temperature and pH on the structure of electrodeposited cobalt nanowires
  9. Influence of combined grain refinement and modification on the microstructure, tensile strength and wear properties of Al-15Si, Al-15Si-4.5Cu alloys
  10. The investigation of mechanical properties of B4C-reinforced AlSi7 foams
  11. The stabilising effect of oxides in foamed aluminium alloy scrap
  12. Physical chemistry of WC-12 %Co coatings deposited by thermal spraying at different standoff distances
  13. Experimental investigation on the tensile behavior of a transparent polyurethane interlayer
  14. Short Communications
  15. Linearized analysis of X-ray stress measurement using the Debye–Scherrer ring
  16. Gas induced semi-solid process effects on microstructure and mechanical properties of 319 aluminum alloy
  17. Ductile fracture behavior of low carbon high strength steel using continuum damage mechanics
  18. Fabrication of β-Si3N4 whiskers by microwave sintering using ZrO2–Y2O3–Al2O3 as liquid phase
  19. People
  20. Berthold Scholtes on the occasion of his 65th birthday
  21. DGM News
  22. DGM News
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