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Background for AA8006

Background for AA8006. AA8006-O surfaces, as-received or etched, activate by annealing at lower temperatures (350 C) than model binary AlPb alloys Activation is actually reduced by increasing the annealing temperature (Yann) Role of grain size on activation not investigated.

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Background for AA8006

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  1. Background for AA8006 • AA8006-O surfaces, as-received or etched, activate by annealing at lower temperatures (350 C) than model binary AlPb alloys • Activation is actually reduced by increasing the annealing temperature (Yann) • Role of grain size on activation not investigated

  2. Anodic behavior of alloy 8006 as function of annealing temperature Potential, VSCE Current Density, mA/cm2

  3. Potential, VSCE Current Density, mA/cm2 Anodic polarization behaviour of etched AA8006 (10s etched in 5% NaOH solution and 60s desmutted in HNO3), then annealed at different temperatures, as compared with that of the annealed AlPb20 model alloy.

  4. Initial results from TEM characterizations The elongated primary particles, parallel the rolling direction below the surface region

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