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Behaviour of Al-Mg alloys at high temperature

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Abstract

The behaviour of a few Al-Mg alloys (up to 7.1 wt% Mg) has been studied on heating in air at 500°C for 8 h or more. The precipitation of a spinel phase, MgAl2O4, is found to take place on the surface and along the transverse section (depth) of the specimen. The alloys seem to be resistant to internal oxidation below 4.5% Mg and thereafter prone to it. Beryllium modification does not suppress the progress of internal oxidation taking place in the Al-Mg alloys. The results have been interpreted on the basis of anodized photomicrographs and X-ray diffraction data.

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  1. Radio-isotope Laboratory, National Metallurgical Laboratory, 831 007, Jamshedpur, India

    Aruna Bahadur

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  1. Aruna Bahadur
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Bahadur, A. Behaviour of Al-Mg alloys at high temperature. J Mater Sci 22, 1941–1944 (1987). https://doi.org/10.1007/BF01132920

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