Fig. 4: SEM and XRD characterisation of microstructure evolution in natural ageing.
From: Corrosion resistant and high-strength dual-phase Mg-Li-Al-Zn alloy by friction stir processing
a–f SEM images of samples at the states of (a, b) as-rolled, (c) WQ, (d) WQ-aged for 1 year, (e) FSP and (f) FSP-aged for 2 years. g–i XRD θ-2θ scan between 22° and 25° showing the AlLi (111) peak and MgAlLi2 (111) peak during (g) in situ heating, (h) WQ and natural ageing for 1 year, and (i) FSP and natural ageing up to 2 years.
