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Hot deformation behavior of a spray-deposited AZ31 magnesium alloy

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Abstract

The flow stress behavior of an as-spray-deposited AZ31 magnesium alloy with fine grains was investigated by means of compression tests with a Gleeble 1500 thermal mechanical simulator at isothermal constant strain rates of 0.01, 0.1, 1.0, and 10 s−1; the testing temperatures ranged from 623 to 723 K. It is demonstrated that a linear equation can be fitted between the Zemer-Hollomon parameter Z and stress in a double-log scale. The effect of deformation parameters on the behavior of recrystallization was analyzed. Dynamic recrystallization (DRX) generally occurs at a higher temperature and at a lower strain rate. The constitutive equation of the spray-deposited AZ31 magnesium alloy is presented by calculating the deformation activation energy (199.8 kJ·mol−1). The as-spray-formed AZ31 alloy is easier for DRX nucleation at elevated temperatures due to the fine grain, which provides a large amount of nucleation sites and a high-diffusivity path for the atom.

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Authors and Affiliations

  1. Advanced Manufacture Technology Center, China Academy of Machinery Science and Technology, Beijing, 100083, China

    Yongbing Li, Yunbo Chen, Jie Ding & Lingli Zuo

  2. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Hua Cui

  3. State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing, 100083, China

    Jishan Zhang

Authors
  1. Yongbing Li
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  2. Yunbo Chen
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  3. Hua Cui
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  4. Jie Ding
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  5. Lingli Zuo
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  6. Jishan Zhang
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Correspondence to Yongbing Li.

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Li, Y., Chen, Y., Cui, H. et al. Hot deformation behavior of a spray-deposited AZ31 magnesium alloy. Rare Metals 28, 91–97 (2009). https://doi.org/10.1007/s12598-009-0018-2

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  • DOI: https://doi.org/10.1007/s12598-009-0018-2

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