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Significant Influence of Minor SiCp on Microstructure and Mechanical Properties of Pure Mg

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Abstract

SiCp/Mg composites, where a minor amount of SiCp was added to the pure Mg, were fabricated in this work to eliminate the influence of precipitates and determine the effect of the particle deformation zone on the microstructure, texture and mechanical properties of the Mg matrix. The results show that the dynamically recrystallized ratio in the SiCp/Mg composite obviously improved because SiCp promoted the nucleation of DRX. Compared with those of the pure Mg, the SiCp/Mg composite had finer grain sizes and weaker basal textures. Even when only 1 vol.% SiCp was added to the pure Mg, the yield strength, ultimate tensile strength and elongation of pure Mg could be increased to 247.3 MPa, 260.36 MPa and 6.85%, respectively. Such high strength of the SiCp/Mg composite might attribute to the fine grain size as well as nano-MgO precipitates after the addition of a minor amount of SiCp.

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Acknowledgments

This work was supported by “National Natural Science Foundation of China” (Grants 51771128 and 51771129), Projects of International Cooperation in Shanxi (Grant No. 201703D421039), Shanxi Province Science and Technology Major Projects (Grant No. 20181101008) and the Program for the Outstanding Innovative Teams of Higher Learning Institutions of Shanxi.

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Authors and Affiliations

  1. Shanxi Key Laboratory of Advanced Magnesium-Based Materials, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, People’s Republic of China

    Quan-xin Shi, Kun-kun Deng, Kai-bo Nie, Wang-gang Zhang, Miao Cao & Wei Liang

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  1. Quan-xin Shi
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  2. Kun-kun Deng
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  3. Kai-bo Nie
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  4. Wang-gang Zhang
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  6. Wei Liang
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Correspondence to Kun-kun Deng.

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Shi, Qx., Deng, Kk., Nie, Kb. et al. Significant Influence of Minor SiCp on Microstructure and Mechanical Properties of Pure Mg. J. of Materi Eng and Perform 29, 1356–1365 (2020). https://doi.org/10.1007/s11665-020-04627-x

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  • DOI: https://doi.org/10.1007/s11665-020-04627-x

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