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High-strain-rate superplasticity of SiC p /8090 aluminum composite

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Abstract

Superplastic tensile tests of a 17 vol.% SiC p /8090 Al-Li composite were carried out at strain rates ranging from 7.25 × 10-4 s-1 to 3.46 × 10-1 s-1 and at temperatures from 773 K to 873 K. A maximum elongation of 300% was obtained at a strain rate of 1.83 × 10-1 s-1 when tested at a temperature of 848 K which was slightly above the solidus temperature of the composite. The effect of a small fraction of liquid phase on high-strain-rate superplasticity was discussed. Finally, the activation energy of high-strain-rate superplastic deformation was calculated and high-strain-rate superplastic mechanism was discussed.

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Authors and Affiliations

  1. Department of Manufacturing Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong

    B. Q. Han, K. C. Chan, T. M. Yue & W. S. Lau

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  1. B. Q. Han
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  2. K. C. Chan
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  3. T. M. Yue
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  4. W. S. Lau
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Han, B.Q., Chan, K.C., Yue, T.M. et al. High-strain-rate superplasticity of SiC p /8090 aluminum composite. Appl Compos Mater 3, 369–378 (1996). https://doi.org/10.1007/BF00133680

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  • DOI: https://doi.org/10.1007/BF00133680

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