Lecture
This lecture covers the creep test, a method to study the deformation and rupture of materials over time. It explains the three stages of creep (primary, secondary, and tertiary) and the Andrade equation used to describe the first two stages. The lecture also delves into high-temperature creep, the influence of short-circuited diffusion, and dynamic recrystallization. Various creep mechanisms such as dislocational creep, diffusion creep, and grain boundary sliding are discussed, along with the factors affecting creep behavior like grain size and temperature. The lecture concludes with insights on superplasticity, a phenomenon observed in materials with high strain rate sensitivity.