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- W2378049716 abstract "The microstructures and superplastic behavior of the extruded rod of Mg-Gd-Y-Zr alloy before and after tensile were investigated and analyzed by microscopy and XRD.And tensile tests at various temperatures and strain rates were performed.The results show that the extruded rod exhibits the maximum elongation of 410% at 450 ℃ and 2×10-4 s-1 and the corresponding strain rate sensitivity of 0.54.The apparent activation energy for the superplastic flow is much higher than the activation energy of grain boundary diffusion or lattice diffusion of magnesium.The high ductility is attributable to grain boundary sliding accommodated by dislocation motion assisted by lattice diffusion.The microstructural results show that the cavities nucleate at the interface between the matrix and the cuboidal Re-rich phase,and that the deformable β phase relaxes the stress concentration at the interface by bearing the partial plastic strain." @default.
- W2378049716 created "2016-06-24" @default.
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- W2378049716 date "2010-01-01" @default.
- W2378049716 modified "2023-09-24" @default.
- W2378049716 title "Effect of second phase on superplastic deformation of extruded rod of Mg-Gd-Y-Zr alloy" @default.
- W2378049716 hasPublicationYear "2010" @default.
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