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Effect of cerium on microstructures and mechanical properties of AZ61 wrought magnesium alloy

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Abstract

The effects of Cerium (Ce) addition on microstructures and mechanical properties of hot-extruded AZ61 alloy were investigated. It is found that Ce refines Mg17Al12 particles and brings about precipitation of a new rod-like phase that is identified as Al4Ce by X-ray diffraction. During hot deformation, Al4Ce particles can refine dynamic recrystallized grains by impeding grain growth. For Ce additions up to 1.0 wt%, the recrystallized grain size decreases; When Ce addition is more than 1.0 wt%, grain size increases inversely. Strength and elongation of extruded or annealed specimens at room temperature increase along with Ce addition up to 1.0 wt%, then decrease. Optimal mechanical properties are correspondent to 1.0 wt% Ce addition.

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Authors and Affiliations

  1. National Engineering Reseach Center of Light Alloys Net Forming, School of Material Science and Engineering, Shanghai Jiao Tong University, 200030, Shanghai, People's Republic of China

    Haitao Zhou, Xiaoqin Zeng, Liufa Liu, Ya Zhang, Yanping Zhu & Wenjiang Ding

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  1. Haitao Zhou
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  2. Xiaoqin Zeng
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  3. Liufa Liu
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  4. Ya Zhang
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  5. Yanping Zhu
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  6. Wenjiang Ding
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Zhou, H., Zeng, X., Liu, L. et al. Effect of cerium on microstructures and mechanical properties of AZ61 wrought magnesium alloy. Journal of Materials Science 39, 7061–7066 (2004). https://doi.org/10.1023/B:JMSC.0000047551.04037.fe

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  • DOI: https://doi.org/10.1023/B:JMSC.0000047551.04037.fe

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