Coarsening kinetics and strengthening mechanisms of core-shell nanoscale precipitates in Al-Li-Yb-Er-Sc-Zr alloy

Yang Wang^a, Shun Zhang^a, Ruizhi Wu^a^,^b^,^*(

), Nodir Turakhodjaev^c, Legan Hou^a, Jinghuai Zhang^a, Sergey Betsofen^d

Fig. 3.. (a) Dark-field TEM image of core-shell Al₃(Yb, Er, Sc, Zr, Li) composite particles aged isothermally at 300 °C/24 h + 150 °C/144 h in Al-Li-Yb-Er-Sc-Zr and the inset selected area diffraction pattern in [001] zone axis. (b, c) HAADF-STEM of composite particles and corresponding element mapping distribution image of Yb, Er, Sc and Zr: (b) HAADF-STEM image; (c) element mapping distribution image.