Understanding materials behavior in extreme environments is the centerpiece in the development of next-generation nuclear reactors. High radiation flux, thermal and chemical gradients, and corrosive environments cause significant degradation in the chemical and mechanical properties of materials. Overcoming technological challenges such as enhanced radiation resistance of reactor core structures and nuclear fuel materials at high doses accompanied with longer lifetimes and improved safety are needed for current and future nuclear reactors. These challenges require design and development of new and advanced materials using a multiscale understanding, i.e., from electronic to microstructure evolution, anchored by advancements in experimental characterization techniques, and predictive modeling capabilities.

While broadly focusing on the progresses in the understanding of materials behavior in extreme environments, this symposium will also summarize recent advancements in experimental characterization techniques, multiscale modeling methodologies, and materials development for nuclear-reactor applications.