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Row-matching in pyramidal Mg2Sn precipitates in Mg–Sn–Zn alloys

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Abstract

Two orientation relationships (ORs) and morphologies with well-defined facets of Mg2Sn precipitates in a Mg–Sn–Zn alloy were recently reported. However, the irrational angles of these two ORs were described without explanation. This study reveals that a unique matching-row-on-terrace structure exists in a dominant facet corresponding to either of the observed ORs. The calculated ORs, the orientations of three facets associated with each OR and the terrace-ledge structures in the dominant facets all match well with observations. The present method of row-matching analysis is useful for understanding high-index faceted interfaces and their associated irrational ORs.

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Acknowledgements

Financial supports from the Young Scientists Fund of the National Natural Science Foundation of China (Grant No. 51601010), Ministry of Science and Technology of People’s Republic of China (Grant No. 2016YFB0701304) and Research Fund for the Doctoral Program of Higher Education from Ministry of Education of the People’s Republic of China (Grant No. 20130002110083) are gratefully acknowledged.

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Authors and Affiliations

  1. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Zhang-Zhi Shi & Xin-Fu Gu

  2. Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China

    Zhi-Peng Sun, Jin-Yu Zhang & Wen-Zheng Zhang

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  1. Zhang-Zhi Shi
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  2. Zhi-Peng Sun
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  3. Xin-Fu Gu
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  4. Jin-Yu Zhang
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  5. Wen-Zheng Zhang
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Correspondence to Wen-Zheng Zhang.

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Shi, ZZ., Sun, ZP., Gu, XF. et al. Row-matching in pyramidal Mg2Sn precipitates in Mg–Sn–Zn alloys. J Mater Sci 52, 7110–7117 (2017). https://doi.org/10.1007/s10853-017-0943-7

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  • DOI: https://doi.org/10.1007/s10853-017-0943-7

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