Failure analysis of a hot extrusion die used for Al-Li alloy processing |
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Authors: | U Rama Murty G S Avadhani E S Dwarakadasa |
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Affiliation: | 1. Department of Metallurgy, Indian Institute of Science, 560012, Bangalore, India
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Abstract: | Al-Li alloys being developed as lighter, substitutes for conventional high strength Al alloys are to be processed by routine
methods. During extrusion of a 8090 Al-Li alloy, the extrusion die container failed causing some alarm. This failed die container
was analysed to examine if the failure was caused by interaction of Li diffusing out of Al-Li alloy with the carbides of die
steel. The evidence, although not conclusive, is sufficient to exercise caution during such processing. |
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Keywords: | Al-Li alloys extrusion die failure diffusion Li-carbide interaction |
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