• Influence of thermomechanical aging on fatigue behaviour of 2014 Al-alloy

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    • Keywords


      Dispersoids; thermomechanical aging (TMA); striations; precipitate–dislocation tangles.

    • Abstract


      The fatigue behaviour of 2014 Al-alloy has been studied in various thermomechanically aged conditions. It is observed that fatigue properties can be improved by a thermomechanical treatment, which would reduce the concentrations of dispersoids, provide a relatively uniform deformation structure and produce fine distribution of 𝜃' precipitates. Fine 𝜃' particles inhibit dynamic recovery and produce uniform deformation structure, which improves fatigue behaviour. Presence of dispersoids and coarse precipitate particles leads to the formation of persistent slip bands (PSBs) and a highly heterogeneous deformation structure, which cause damage to fatigue properties.

    • Author Affiliations


      S Singh1 D B Goel1

      1. Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Roorkee 247 667, India
    • Dates

  • Bulletin of Materials Science | News

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