| Abstract Scope |
Light alloys are frequently exposed to harsh environments in service. X-ray synchrotron micro and nanotomography provide a wonderful means of characterization damage in materials non-destructively. In this talk, I will describe experiments and simulations that address the critical link between microstructure and corrosion behavior of aluminum alloys, obtained by x-ray synchrotron tomography. In particular, precipitate location, size, and composition play a pivotal role in determining the initiation and propagation of corrosion damage light alloys. Four-dimensional (4D) in situ experiments conducted on freeze and thaw conditions, as well as different aging conditions yielded extremely interesting insights into the complex interplay between precipitates, grain boundaries, and inclusions. The correlative microscopy approach used here, coupled with nanoindentation measurements, has yielded a multi-faceted understanding of the corrosion initiation and progression in these alloys at the nanoscale, which will be discussed. |