Comparison of the Solid Solution Properties of Mg‐RE (Gd, Dy, Y) Alloys with Atomistic Simulation | Zendy

Yurong Wu | Zendy; Wangyu Hu | Zendy

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Comparison of the Solid Solution Properties of Mg‐RE (Gd, Dy, Y) Alloys with Atomistic Simulation

Author(s) -

Yurong Wu,

Wangyu Hu

Publication year - 2008

Publication title -

physics research international

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.136

H-Index - 13

eISSN - 2090-2239

pISSN - 2090-2220

DOI - 10.1155/2008/476812

Subject(s) - materials science , solid solution , solid solubility , solubility , crystal twinning , lattice constant , thermodynamics , solid solution strengthening , modulus , lattice (music) , slip (aerodynamics) , chemistry , composite material , metallurgy , microstructure , physics , diffraction , acoustics , optics

Molecular dynamic simulations have been performed to study the solid solution mechanism of Mg100-xREx (RE=Gd,Dy,Y, x=0.5,1,2,3,4 at.%). The obtained results reveal that the additions of Gd, Dy and Y increase the lattice constants of Mg-RE alloys. Also the axis ratio c/a remains unchanged with increase in temperature, restraining the occurrence of nonbasal slip and twinning. Furthermore, it is confirmed that bulk modulus of Mg alloys can be increased remarkably by adding the Gd, Dy, Y, especially Gd, because the solid solubility of Gd in Mg decrease sharply with temperature in comparison with Dy and Y. Consequently, the addition of the RE can enhance the strength of Mg-based alloys, which is in agreement with the experimental results

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