Bulletin of Materials Science

, Volume 15, Issue 2, pp 171–181 | Cite as

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

  • U Rama Murty
  • G S Avadhani
  • E S Dwarakadasa


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.


Al-Li alloys extrusion die failure diffusion Li-carbide interaction 


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Copyright information

© Indian Academy of Sciences 1992

Authors and Affiliations

  • U Rama Murty
    • 1
  • G S Avadhani
    • 1
  • E S Dwarakadasa
    • 1
  1. 1.Department of MetallurgyIndian Institute of ScienceBangaloreIndia

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