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Loading Mode Dependence of {\(10\bar{1}2\)} Twin Variant Selection in a Rolled Mg-Al-Zn Alloy

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Abstract

The {\(10\stackrel{-}{1}2\)} twinning characteristic and its related mechanical behavior were examined in a rolled Mg-Al-Zn alloy via compression along the rolling direction (C-RD) and tension along the normal direction (T-ND). The results show that the twinning behavior greatly depends on the loading mode and the twin variant selection is largely dominated by Schmid factor criterion under both deformation modes. Parallel twin bands consisted by single-type variant and/or para variant are frequently observed in C-RD sample, while intersecting twin structures composed by different twin variant types prevail in T-ND sample. Preliminary analysis suggests that the different twinning characteristics should be responsible for the variations in the yield stress and strain-hardening behavior between the two conditions.

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Acknowledgments

This work was supported by National Natural Science Foundation of China (Grant no. 51874367), the Science Research Project of Jiangxi Province Office of Education (Grant no. GJJ200910) and Doctoral Science Research Foundation of Nanchang Hangkong University (Grant no. 2030009401083).

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Authors and Affiliations

  1. School of Aeronautical Manufacturing Engineering, Nanchang Hangkong University, Nanchang, 330063, China

    Longhui Mao & Tao Chen

  2. School of Materials Science and Engineering, Central South University, Changsha, 410083, China

    Longhui Mao, Chuming Liu, Yingchun Wan, Tao Chen, Shunong Jiang & Zhiyong Chen

  3. Jiangxi Key Laboratory of Forming and Joining Technology for Aerospace Components, Nanchang Hangkong University, Nanchang, 330036, China

    Longhui Mao

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  1. Longhui Mao
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Mao, L., Liu, C., Wan, Y. et al. Loading Mode Dependence of {\(10\bar{1}2\)} Twin Variant Selection in a Rolled Mg-Al-Zn Alloy. J. of Materi Eng and Perform 30, 7979–7988 (2021). https://doi.org/10.1007/s11665-021-06010-w

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  • DOI: https://doi.org/10.1007/s11665-021-06010-w

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