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Microstructure, Tensile Properties, and Corrosion Behavior of Die-Cast Mg-7Al-1Ca-xSn Alloys

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Abstract

The microstructure, tensile properties, and corrosion behavior of die-cast Mg-7Al-1Ca-xSn (x = 0, 0.5, 1.0, and 2.0 wt.%) alloys were studied using OM, SEM/EDS, tensile test, weight loss test, and electrochemical test. The experimental results showed that Sn addition effectively refined grains and intermetallic phases and increased the amount of intermetallic phases. Meanwhile, Sn addition to the alloys suppressed the formation of the (Mg,Al)2Ca phase and resulted in the formation of the ternary CaMgSn phase and the binary Mg2Sn phase. The Mg-7Al-1Ca-0.5Sn alloy exhibited best tensile properties at room temperature, while Mg-7Al-1Ca-1.0Sn alloy exhibited best tensile properties at elevated temperature. The corrosion resistance of studied alloys was improved by the Sn addition, and the Mg-7Al-1Ca-0.5Sn alloy presented the best corrosion resistance.

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Acknowledgments

This study was financially Supported by National Natural Science Foundation of China (Nos. 51504153 and 51571145), Natural Science Foundation of Liaoning Province (No. 201602548) and Science and Technology Project of Shenyang (No. 17-11-8-00).

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Authors and Affiliations

  1. School of Materials Science and Engineering, Shenyang University of Technology, Shenyang, 110870, China

    Feng Wang, Haikuo Dong, Shijie Sun, Zhi Wang, Pingli Mao & Zheng Liu

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Correspondence to Feng Wang.

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Wang, F., Dong, H., Sun, S. et al. Microstructure, Tensile Properties, and Corrosion Behavior of Die-Cast Mg-7Al-1Ca-xSn Alloys. J. of Materi Eng and Perform 27, 612–623 (2018). https://doi.org/10.1007/s11665-018-3145-9

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  • DOI: https://doi.org/10.1007/s11665-018-3145-9

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