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Effect of Micro- and Nano-SiC Particulate Reinforcements in Magnesium-Based Metal Matrix Composites

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Abstract

The effects of the volume ratios of micro and nano-SiC particles (SiCp) on the grain refinement, distribution of SiCp particle, and tensile properties of the as-cast AZ31B (Mg-3Al-1Zn-0.3Mn) magnesium-based metal matrix composites have been investigated. As the volume fraction of micron SiCp decreases to 9 vol.% and the nano-SiCp increases to 1 vol.%, excellent grain refinement effect is achieved. This is due to both the uniform distribution and refining effects of micro- and nano-SiCp. Moreover, the micron SiCp distribute along the grain boundaries, while nano-SiCp is mainly distributed around the micron SiCp. The room-temperature tensile results show that the optimal room-temperature yield and tensile strengths are achieved with a 9/1 ratio of micro to nano-SiCp, while the 9.5/0.5 ratio yielded the highest elongation.

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Acknowledgments

This work was supported by “the Fundamental Research Funds for the Local Universities” (Grant No. SYAU. 880415029) and “China Postdoctoral Science Foundation funded project.”

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Correspondence to Ming-Jie Shen or Tao Ying.

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Shen, MJ., Ying, T., Chen, FY. et al. Effect of Micro- and Nano-SiC Particulate Reinforcements in Magnesium-Based Metal Matrix Composites. J. of Materi Eng and Perform 25, 2222–2229 (2016). https://doi.org/10.1007/s11665-016-2068-6

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  • DOI: https://doi.org/10.1007/s11665-016-2068-6

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