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- W4382810080 abstract "The strength and plasticity of magnesium (Mg) alloys have always been of significant concern. Here, it explores how the mechanical properties and precipitation transformation of the as-cast Mg-0.9Co-4.5Y (at.%) alloy are affected by aging hardening. The results demonstrate that the ultimate compressive strength (UCS) and compressive yield strength (CYS) of the as-cast Mg-0.9Co-4.5Y (at.%) alloy at peak hardness reach 604.8 MPa and 401.5 MPa respectively, while the compression rate (ε) of that after solution-treated reaches 21.9%. For the above changes in malleability and strength, we conduct an in-depth investigation of the impacts of phase composition, LPSO structure, and matrix precipitation. We find that the improvement of malleability is linked to the reduction of the volume fraction of LPSO phase after solution treatment, while the substantially increase of CYS after peak-aging is related to the dispersion strengthen of MgYCo4 phase and precipitation of β′ and β′′ phases, in which the precipitation of β′ and β′′ phases plays a leading role. This study uncovers the mechanical property and microstructure evolution of Mg-0.9Co-4.5Y (at.%) alloy in the aging response process and provides ideas for the performance regulation of Mg–Co–Y alloys." @default.
- W4382810080 created "2023-07-02" @default.
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- W4382810080 date "2023-08-01" @default.
- W4382810080 modified "2023-09-29" @default.
- W4382810080 title "Effect of aging treatment on the mechanical property and precipitation transformation of Mg–Co–Y alloy" @default.
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- W4382810080 doi "https://doi.org/10.1016/j.msea.2023.145322" @default.
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