首页|Plastic deformation induced formation of supersaturated solid solution nanostructure in a dual-phase Cu-Ag alloy
Plastic deformation induced formation of supersaturated solid solution nanostructure in a dual-phase Cu-Ag alloy
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NSTL
Elsevier
? 2022 Elsevier B.V.A gradient nanostructured (GNS) surface layer was generated in a dual-phase Cu-Ag alloy by means of surface mechanical grinding treatment at liquid nitrogen temperature. With a decreasing depth in the surface layer, the coarse-grained microstructure of Cu matrix and Ag precipitates gradually converts into a nanolaminated structure of Ag- and Cu-rich phases with simultaneous chemical mixing, and finally forms a homogeneous single-phase supersaturated solid solution (SSS) nanostructure. Accordingly, a dislocation-mediated transportation mechanism was proposed to dominate the chemical mixing of Ag and Cu atoms, i.e., dislocations interacting with solution atoms penetrate the Cu/Ag interface and glide in the neighboring solvent-phase lamella.
Chemical mixingDual-phase Cu alloyGradient nanostructuredSupersaturated solid solutionSurface mechanical grinding treatment
Han Z.X.、Han Z.、Luo Z.P.、Wang Z.B.
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Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences
NSTL
Elsevier
