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The stress-strain rate behaviour of superplastic Zn-Al eutectoid alloy

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Abstract

The stress-strain rate behaviour of a superplastic Zn-22% Al alloys was investigated by the differential strain rate and constant load cycling tests on an Instron machine. A region with a rate sensitivity approaching unity was observed at low strain rates. On increasing the strain rate, a transition to the superplastic region occurred through an intermediate region of lower m (∼0.35). These observations are interpreted in terms of a transition from diffusional creep to superplastic flow with a threshold stress for superplastic deformation.

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Author notes

  1. R. S. Mishra

    Present address: Department of Metallurgy, University of Sheffield, UK

Authors and Affiliations

  1. Department of Metallurgical Engineering, Indian Institute of Technology, Kanpur, India

    R. S. Mishra & G. S. Murty

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  1. R. S. Mishra
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  2. G. S. Murty
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Mishra, R.S., Murty, G.S. The stress-strain rate behaviour of superplastic Zn-Al eutectoid alloy. J Mater Sci 23, 593–597 (1988). https://doi.org/10.1007/BF01174691

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  • DOI: https://doi.org/10.1007/BF01174691

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