Solid solution decomposition in ternary Mg alloys containing rare earth metals

Figure 88. Electron micrographs of the M g - R E alloys, a - Mg-2.9 mass % Yb, ageing at 225°C for 3 h, x 10000, b - Mg-2 .9 mass % Yb, ageing at 250°C for 4 h, x 32500, c - Mg-5 .2 mass % Sm-5.2 mass % Y, ageing at 220°C for 200 h, x 14500, d - Mg-5 .2 mass % Sm-5.2 mass % Y, ageing at 220°C for 200 h, x 36000.