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Hot-compression behavior of Al alloy 5182

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Abstract

Hot-compression of aluminum alloy 5182 was carried out on a Gleeble-1500 thermo-simulator at deformation temperature ranging from 350 °C to 500 °C and at strain rate from 0.01 s−1 to 10 s−1 with strain range from 0.7 to 1.9. The microstructures and macro-textures evolution under different conditions were investigated by polarized optical microscopy and X-ray diffraction analysis, respectively. The basic trend is that the hot-compression stress increases with the decrease of temperature and increase of strain rate, which is revealed and elucidated in terms of Zener-Hollomon parameter in the hyperbolic sine equation with the hot-deformation activation energy of 143.5 kJ/mol. An empirical constitutive equation is proposed to predict the hot-deformation behavior under different conditions. As deformation temperature increases up to 400 °C, at strain rate over 1 s−1, dynamic recrystallization (DRX) occurs. Cube orientation {100}〈001〉 is detected in the recrystallized sample after hot-compression.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Central South University, Changsha, 410083, China

    Jian-guo Tang  (唐建国), Xing-xing Huang  (黄星星) & Xin-ming Zhang  (张新明)

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  1. Jian-guo Tang  (唐建国)
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  2. Xing-xing Huang  (黄星星)
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  3. Xin-ming Zhang  (张新明)
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Corresponding author

Correspondence to Jian-guo Tang  (唐建国).

Additional information

Foundation item: Project(50905188) supported by the National Natural Science Foundation; Project(2012CB619500) supported by Key Basic Research Program of China

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Tang, Jg., Huang, Xx. & Zhang, Xm. Hot-compression behavior of Al alloy 5182. J. Cent. South Univ. 19, 2073–2080 (2012). https://doi.org/10.1007/s11771-012-1247-3

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  • DOI: https://doi.org/10.1007/s11771-012-1247-3

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