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Thermal Stability and Microstructure of Nanometric 2024 Aluminum Alloy Powder Obtained by Cryogenic Milling and Spark Plasma Sintering

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Academic year: 2019

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Figure  2  shows  the  particle  size  distribution  and  morphology of the as-received atomized and milled powders
Figure 3. (a) Bright field (BF) and (b) dark field (DF) TEM micrographs of powder milled for 8 h
Figure 4. DSC curves for (a) as-received atomized powder and (b) powder milled for 8 h, measured using heating rates of 10, 20, 30,  and 40 °C/min.
Figure 8. SEM images of samples cryomilled for 8 h, degassed for 20 h at (a) 250 °C and (b) 350 °C, and then sintered.
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