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Superplasticity of aluminium alloys grain-refined by zirconium

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Abstract

The superplasticity of aluminium alloys containing magnesium, oint, iron and manganese as well as zirconium as a grain-refining addition element was investigated by high-temperature tensile tests. The tool elongation and the strain rate sensitivity as a function of strain rate and temperature were determined. The activation enthalpy and activation volume were also determined in the superlastic region of the deformation. !n addition to the tensile tests metallo-graphic investigations were also made. The results obtained show that the superplasticity of the alloys investigated is increasing by the addition of iron but it is decreasing by the simultaneous addition of iron and manganese.

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Authors and Affiliations

  1. Institute for General Physics, Loránd Eötvös University, Budapest, Hungary

    A. Juhász, N. Q. Chinh, P. Tasnádi & I. Kovács

  2. HUNGALU Engineering and Development Centre, Budapest, Hungary

    T. Turmezey

Authors
  1. A. Juhász
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  2. N. Q. Chinh
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  3. P. Tasnádi
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  4. I. Kovács
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  5. T. Turmezey
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Juhász, A., Chinh, N.Q., Tasnádi, P. et al. Superplasticity of aluminium alloys grain-refined by zirconium. J Mater Sci 22, 137–143 (1987). https://doi.org/10.1007/BF01160562

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  • DOI: https://doi.org/10.1007/BF01160562

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