This textbook presents a compilation of class-tested materials and the results of research on a range of topics in into one comprehensive volume for readers engaged in the materials science and engineering aspects of phase transformation in metals. Accordingly, this is a suitable textbook for undergraduate and graduate students in the fields of mechanical engineering, materials science, metallurgical engineering, and related disciplines. The book incorporates two-dimensional materials, crystal defects, mass transport, thermodynamics of phase, solidification heat transfer, solidification and phase diagrams related to nucleation particle phases and explains solid-state phase transformation, mechanical behaviour and fracture toughness, non-destructive methods, physical and optical properties of solids, and electrochemical corrosion. It also stands as an excellent reference treatise for practicing and consulting engineers. Moreover, the book is appropriate for graduate-level coursework, covering advanced subjects including quantum mechanics, two dimensional materials, fracture mechanics, non-destructive methods for evaluating structural integrity, and advanced analytical techniques in some appendices.