The textbook "Mechanical Behavior of Materials: Deformation and Design" offers an innovative, design-oriented approach to understanding the mechanical behavior of materials. It is aimed at students and professionals who wish to learn the fundamental scientific principles in a practical context. By integrating real case studies and illustrative applications, the learning experience is made more motivating and engaging. The book also includes three guided learning units that serve as special self-study tutorials on complex topics. Additionally, it covers the latest content not found in other textbooks, such as recent advances in microstructural characterization and a modern presentation of the fundamentals that link the microstructure of materials to their mechanical behavior.