Microstructure of AA2024-SiC nanostructured metal matrix composites
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Nanostructured metal matrix composites (NMMCs) in large-dimension billets were fabricated by hot isostatic pressing (HIPing) of cryomilled powders consisting of AA2024 alloy reinforced by 25 wt.% SiC particles. Microstructure of the bulk nanostructured composites and cryomilled powders was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). In addition, mechanical properties of the bulk nanocomposites were also addressed.
KeywordsTransmission Electron Microscopy Observation Representative Scan Electron Microscopy Image Cryomilled Powder HIPing Process Large Agglomerate Particle
This work was supported by US Army Research and Engineering Command under a SBIR fund (Contract No. W911W6-06-C-0032).