Aluminum melt foam processing for light-weight structures

  • Raj R
  • Daniel B
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Aluminum foam was prepared by two routes, namely, gas injection technique
and by the decomposition of TiH2 blowing agent. The foam structure
can be largely controlled by the amount of degassing agent and duration
of foaming. The heterogeneity in cell structure could be explained
on the basis of foam stability, drainage in the cell walls, and heat
transfer during quenching. The variation in cell size and drainage
is negligible when the holding time is around 120 s at 750°C. The
constant strain rate compression tests indicate that the Young's
modulus, plateau stress, and energy absorption capacity increases
with relative density of the foam, while the densification strain
reduces with increase in relative density.

Author-supplied keywords

  • Aluminum alloy
  • Automotive applications
  • Blowing agent
  • Cell structure
  • Closed-cell
  • Decomposition
  • Energy absorption
  • Foam processing
  • Gas/air injection
  • Light-weight structure
  • Low density
  • Mechanical properties
  • Metallic foams
  • Plateau stress
  • Relative density

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