Affiliation:
1. Institute of Technology Bandung
2. PT Dirgantara Indonesia
3. BASF Corporation
Abstract
Aluminum alloy 2024 is normally strengthened with alloying elements of Cu and Mg. As these elements reduce the corrosion resistance of the materials, a pure Al clad is normally applied. Nevertheless, during ageing at high temperatures, inter-diffusion between elements can occur and causing the recession of the clad. This study investigates the inter-diffusion behavior Al 2024 clad at ageing temperature of 495°C and predicts the clad lifetime due to reheat treatment process. The depletion rate of clad was found at 0.8 μm per-hour of heat treatment. It is predicted that the thickness of the Al 2024 clad will no longer meet with the specifications on heat treatment for 42 hours at 495°C.
Publisher
Trans Tech Publications, Ltd.
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