Cai group, a.k.a. Extreme Materials Lab, in Materials Science and Engineering Department at Virginia Tech is an interdisciplinary research group at the interface of materials science, tribology, and corrosion. We explore the processing-structure-property relationships in structural metals and materials using experiments, analytical theory, and computer simulations. Our current research focuses on understanding the deformation and corrosion of materials under extreme conditions. These conditions include, but are not limited to, high strain rates, irradiation, corrosive environment, high surface friction, cyclic loading, high temperatures, etc.