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Dynamic and Static Aging Precipitation of β-Mg17Al12 in the AZ80 Magnesium Alloy During Multi-directional Forging and Subsequent Aging

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Acta Metallurgica Sinica (English Letters) Aims and scope

Abstract

Dynamic and static aging precipitation of Mg17Al12 phases in AZ80 magnesium alloy was studied by multi-directional forging (MDF) with decreasing temperatures from 410 to 300 °C and subsequent aging process. The results show that the morphology of the β-Mg17Al12 phases during forging process dynamically precipitates and aging process (statically precipitation) exhibited granular and laminar shapes, respectively. During the MDF, the inhomogeneous dynamic precipitation of the β-Mg17Al12 phases results in the uniformity on grain size, which is fine in the area with many granular Mg17Al12 phases but the grain is still coarse where there is no Mg17Al12 phases. During the aging process, the morphology of newly formed β-Mg17Al12 phases depends on the structural character of the forged sample. The newly precipitated β-Mg17Al12 phases are coarse laminar and needle-like shape in area with coarse grain. While, the fine newly precipitated β-Mg17Al12 phases are fine granular and needle-like in the area with fine grain.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (Nos. 51204053, 51674078 and 51374067), the Fundamental Research Fund for Central Universities (Nos. N160913002,N130409005 and N130209001) and A Project supported by Scientific Research Fund of Liaoning Province (No. 2015022003).

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Authors and Affiliations

  1. Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang, 110819, China

    Qing-Feng Zhu, Gao-Song Wang, En-Ge Zhang, Fan-Zheng Liu, Zhi-Qiang Zhang & Jian-Zhong Cui

  2. School of Materials Science and Engineering, Northeastern University, Shenyang, 110819, China

    Qing-Feng Zhu, Gao-Song Wang, En-Ge Zhang, Fan-Zheng Liu, Zhi-Qiang Zhang & Jian-Zhong Cui

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  1. Qing-Feng Zhu
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  2. Gao-Song Wang
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Correspondence to Qing-Feng Zhu.

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Zhu, QF., Wang, GS., Zhang, EG. et al. Dynamic and Static Aging Precipitation of β-Mg17Al12 in the AZ80 Magnesium Alloy During Multi-directional Forging and Subsequent Aging. Acta Metall. Sin. (Engl. Lett.) 30, 941–948 (2017). https://doi.org/10.1007/s40195-017-0575-6

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  • DOI: https://doi.org/10.1007/s40195-017-0575-6

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