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Characterizations on the instantaneously formed Ni-containing intermetallics in magnesium alloys

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  • معلومة اضافية
    • بيانات النشر:
      KeAi Communications Co., Ltd., 2023.
    • الموضوع:
      2023
    • Collection:
      LCC:Mining engineering. Metallurgy
    • نبذة مختصرة :
      Instantaneous reactions of Al, Mn, Zn, Zr and Y with Ni by mixing the prepared Mg-8Al-0.4Mn, Mg-6Zn-2Y-0.5Zr and Mg-0.6Ni melts were investigated in this work to reveal the underlying mechanisms of their effects on the removal of Ni impurity. The results indicate three Ni-containing intermetallics, namely Al4NiY, Al4Ni(Y,Zr) and Al31Ni2Mn6. The former two phases present lath-like and have a relatively larger size (> 20 µm in length) than the latest one which is granular with the diameter of ∼120 nm. This illustrates that Al and Y(/Zr) can efficiently remove Ni by forming Al4NiY or Al4Ni(Y,Zr) which would precipitate to the bottom of the melt. Furthermore, adding Y into Mg-Al based alloys can simultaneously remove Fe and Ni, which contributes their excellent corrosion resistance. Finally, this paper proposes two methods helped to efficiently remove Ni for both Mg-Al based alloys and Al-free Mg alloys, and both of them are also benefit to improve alloys’ strength.
    • File Description:
      electronic resource
    • ISSN:
      2213-9567
    • Relation:
      http://www.sciencedirect.com/science/article/pii/S2213956722000044; https://doaj.org/toc/2213-9567
    • الرقم المعرف:
      10.1016/j.jma.2021.11.032
    • الرقم المعرف:
      edsdoj.326aacb89de940d19d6e3b83932bf343