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In Situ Synchrotron Diffraction Analysis of Zn Additions on the Compression Properties of NK30

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    0521997 - ÚJF 2020 RIV CH eng J - Journal Article
    Tolnai, D. - Dupont, M. -A. - Gavras, S. - Fekete-Horváth, Klaudia - Stark, A. - Schell, N. - Máthis, K.
    In Situ Synchrotron Diffraction Analysis of Zn Additions on the Compression Properties of NK30.
    Materials. Roč. 12, č. 23 (2019), č. článku 3935. E-ISSN 1996-1944
    R&D Projects: GA ČR(CZ) GA18-07140S; GA MŠMT EF16_013/0001794
    Institutional support: RVO:61389005
    Keywords : Mg-Nd-Zn alloys * acoustic emission * deformation behavior * in situ synchrotron radiation diffraction
    OECD category: Materials engineering
    Impact factor: 3.057, year: 2019
    Method of publishing: Open access
    https://doi.org/10.3390/ma12233935

    In situ synchrotron radiation diffraction was performed during the compression of as-cast Mg-3Nd-Zn alloys with different amounts (0, 0.5, 1, and 2 wt %) of Zn addition at room temperature. During the tests, the acoustic emission signals of the samples were recorded. The results show that the addition of Zn decreased the strength of the alloys but, at the same time, increased their ductility. In the earlier stages of deformation, twin formation and basal slip were the dominant deformation mechanisms. The twins tended to grow during the entire compression stage. However, the formation of new twins dominated only at the beginning of the plastic deformation. In order to accommodate the strain levels, the alloys containing Zn underwent nonbasal slip in the later stages of deformation. This can be attributed to the presence of precipitates containing Zn in the microstructure, inhibiting twin growth.
    Permanent Link: http://hdl.handle.net/11104/0306527

     
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