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From: Machine-learning-enabled composition–process co-design of heat-resistant cast aluminum alloys with superior elevated-temperature strength

Machine-learning-enabled composition–process co-design of heat-resistant cast aluminum alloys with superior elevated-temperature strength

Figure 8. TEM characterization and size distribution of nanoscale precipitates in the ZL-2 alloy: (A) low-magnification TEM image; (B) STEM image and corresponding EDS elemental maps of Mn-rich Al₂₀Cu₂Mn₃ precipitates, (B1 and B2) HRTEM and IFFT images of Al₂₀Cu₂Mn₃; (C) STEM image and corresponding EDS elemental maps of Al₂CuMg precipitates, (C1 and C2) HRTEM and IFFT images of Al₂CuMg; (D and E) size distributions of Al₂₀Cu₂Mn₃ and Al₂CuMg precipitates, respectively. TEM: Transmission electron microscopy; STEM: scanning transmission electron microscopy; EDS: energy-dispersive X-ray spectroscopy; HRTEM: high-resolution transmission electron microscopy; IFFT: inverse fast Fourier transform.