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Increasing the drawability of AA2014 Al-Cu by differential heat treatment

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Abstract

The limiting drawing ratio of an AA2014 Al-Cu alloy sheet has been increased from a value of 1.8 in uniform, annealed material to a value of 2.6 by the use of differential heat treatment. That treatment involved setting up a transient thermal gradient to give a gradient of solid solution, which then led to a large strength gradient after quenching and aging. Both the heat treatment and the cup drawing process were modeled to predict an optimum treatment. The finite-element modeling (FEM) method was used to simulate cup drawing, with a material description that included plastic anisotropy, which is known to have a significant influence on the process.

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Author notes

  1. H. Schofield (Engineering Student)

    Present address: School of Metallurgy and Materials, The University of Birmingham, United Kingdom

Authors and Affiliations

  1. IRC in Materials for High Performance Applications, The University of Birmingham, B15 2TT, Birmingham, United Kingdom

    P. S. Bate (Senior Research Fellow) & D. J. Barrett (Senior Technician)

  2. Development Metallurgist, Chromalloy United Kingdom Limited, DE55 4RH, Deroyshire, United Kingdom

    H. Schofield (Engineering Student)

Authors
  1. P. S. Bate
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  2. D. J. Barrett
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  3. H. Schofield
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Bate, P.S., Barrett, D.J. & Schofield, H. Increasing the drawability of AA2014 Al-Cu by differential heat treatment. Metall Mater Trans A 29, 1405–1414 (1998). https://doi.org/10.1007/s11661-998-0355-z

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  • DOI: https://doi.org/10.1007/s11661-998-0355-z

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