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Fabrication of Nano-SiC Particulate Reinforced Mg-8Al-1Sn Composites by Powder Metallurgy Combined with Hot Extrusion

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Abstract

Nano-SiC particulates (n-SiCp) reinforced Mg-8Al-1Sn (AT81) composites with different volume fractions (0, 0.25, 0.5 and 1.0 vol.%) were fabricated by powder metallurgy process (P/M) combined with hot extrusion. The mechanical properties of the composite increased as the n-SiCp content increased until the n-SiCp content exceeded 0.5 vol.%, at which point they began to decrease. For this reason, the 0.5 vol.% n-SiCp/AT81 composite was considered optimal. The 0.2% offset yield strength (YS), ultimate tensile strength (UTS) and elongation (ε) of 0.5 vol.% n-SiCp/AT81 composites increased from 175, 318 MPa and 4.5% to 239, 381 MPa and 8.3%, respectively, compared to AT81. Both, the strength and plasticity of the 0.5 vol.% n-SiCp/AT81 composites were improved as well. The improvement in mechanical properties can be attributed to the progressively refined matrix grain size, relatively uniform distribution of n-SiCP and the well-bonded interfaces between n-SiCp and the matrix.

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Acknowledgment

Financial supports from the National Basic Research Program of China (973 Program, No. 2012CB619600), the Natural Science Foundation of China (No. 51474111) and Science and Technology Development Project of Jilin Province (No. 20160519002JH) are greatly acknowledged. Partial financial supports come from the Fundamental Research Funds for the Central Universities (JCKY-QKJC02) and The ChangBai Mountain Scholars Program (2013014).

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Authors and Affiliations

  1. Key Laboratory of Automobile Materials of Ministry of Education and School of Materials Science and Engineering, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun, 130025, People’s Republic of China

    Chuan-Peng Li, Zhi-Guo Wang, Hui-Yuan Wang, Xian Zhu, Min Wu & Qi-Chuan Jiang

  2. Center of Analytical and Testing, Beihua University, No. 3999 Binjiang East Road, Jilin, 132013, People’s Republic of China

    Chuan-Peng Li & Zhi-Guo Wang

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  1. Chuan-Peng Li
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  2. Zhi-Guo Wang
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  3. Hui-Yuan Wang
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  4. Xian Zhu
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Correspondence to Hui-Yuan Wang.

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Li, CP., Wang, ZG., Wang, HY. et al. Fabrication of Nano-SiC Particulate Reinforced Mg-8Al-1Sn Composites by Powder Metallurgy Combined with Hot Extrusion. J. of Materi Eng and Perform 25, 5049–5054 (2016). https://doi.org/10.1007/s11665-016-2326-7

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  • DOI: https://doi.org/10.1007/s11665-016-2326-7

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