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Possibility of grain refinement for superplasticity of a Mg-AI-Zn alloy by pre-deformation

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Abstract

For a commercial Mg-Al-Zn alloy sheet, tensile tests are carried out under various strains, strain rates and temperatures to investigate the possibility of grain refinement by dynamic recrystallization during pre-deformation. It is found from the microstructural observations that relatively fine grains of 10 μm or so, in diameter are attained under the conditions of 250°C and 8.3 × 10−4 s−1. The specimen pre-strained under this condition also exhibits a fairly good superplasticity of total elongation beyond 300%.

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Authors and Affiliations

  1. Department of Mineral Science and Technology, Kyoto University, Kyoto 606, Sakyo-ku, Japan

    Hirohiko Takuda, Shiomi Kikuchi & Natsuo Hatta

Authors
  1. Hirohiko Takuda
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  2. Shiomi Kikuchi
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  3. Natsuo Hatta
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Takuda, H., Kikuchi, S. & Hatta, N. Possibility of grain refinement for superplasticity of a Mg-AI-Zn alloy by pre-deformation. J Mater Sci 27, 937–940 (1992). https://doi.org/10.1007/BF01197645

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  • DOI: https://doi.org/10.1007/BF01197645

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