This academic book, 'Phase Transformations in Engineering Materials' by Prof. Abbas Khamas Al-Saadi (2019 - Dar Al-Hiwar for Publishing and Distribution), offers a comprehensive exploration into the structural changes that occur in materials. It delves into the thermodynamics and kinetics of phase transformations, covering essential concepts like nucleation, growth, and diffusion. The text provides a detailed analysis of transformations in various metals and alloys, such as steel, elucidating their impact on microstructure and mechanical properties, making it an indispensable resource for students and professionals in materials science and engineering.