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Failure analysis of a hot extrusion die used for Al-Li alloy processing

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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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Authors and Affiliations

  1. Department of Metallurgy, Indian Institute of Science, 560012, Bangalore, India

    U Rama Murty, G S Avadhani & E S Dwarakadasa

Authors
  1. U Rama Murty
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  2. G S Avadhani
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  3. E S Dwarakadasa
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Rama Murty, U., Avadhani, G.S. & Dwarakadasa, E.S. Failure analysis of a hot extrusion die used for Al-Li alloy processing. Bull. Mater. Sci. 15, 171–181 (1992). https://doi.org/10.1007/BF02927443

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  • DOI: https://doi.org/10.1007/BF02927443

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