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Effect of Zn on the Mechanical Properties and Microstructure of as-Cast and Solution-Treated Mg–6Y–2Nd–1Gd–0.5Zr Alloys

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Strength of Materials Aims and scope

The effect of varying Zn contents (0, 0.4, and 0.8 wt.%) on the microstructure and mechanical properties of an Mg–6Y–2Nd–1Gd–0.5Zr alloy was systematically evaluated to improve the above characteristics. An as-cast alloy is shown to mainly consist of α-Mg, Mg24Y5, Mg12Nd, and Mg5Gd phases. An addition of Zn to the alloy results in the Mg12YZn phase formation and grain refinement. An increase in a Zn volume from 0.4 to 0.8 wt.% brings about a narrower solidification temperature range. After solution treatment, Mg12Nd and Mg24Y5 mainly disappear, but a Mg12YZn content grows. The tensile strength, yield strength, and elongation of a solution-treated Mg–6Y–2Nd–1Gd–0.5Zr–0.4Zn alloy are 284 MPa, 218 MPa, and 6.5%, respectively.

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Authors and Affiliations

  1. Southwest Technique and Engineering Institute, Chongqing, China

    J. Q. Tao, S. H. Huang, G. Z. Zhao, Z. W. Huang, Y. Wu, Y. Y. Wan & M. Li

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  1. J. Q. Tao
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  2. S. H. Huang
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  3. G. Z. Zhao
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  4. Z. W. Huang
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  5. Y. Wu
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  7. M. Li
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Correspondence to J. Q. Tao.

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Translated from Problemy Prochnosti, No. 4, pp. 124 – 131, July – August, 2019.

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Tao, J.Q., Huang, S.H., Zhao, G.Z. et al. Effect of Zn on the Mechanical Properties and Microstructure of as-Cast and Solution-Treated Mg–6Y–2Nd–1Gd–0.5Zr Alloys. Strength Mater 51, 609–615 (2019). https://doi.org/10.1007/s11223-019-00107-3

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  • DOI: https://doi.org/10.1007/s11223-019-00107-3

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