This book surveys the broad field of mechanical alloying from a scientific and technological perspective to form a timely and comprehensive resource valuable to both students and researchers. The treatment progresses from the historical background through a description of the process, the different metastable effects produced, and the mechanisms of phase formation to applications of mechanically alloyed products. The presentation is straightforward and easy to understand but does not compromise the scientific accuracy. It includes an unusually extensive listing of the results of different metastable effects obtained in various alloy systems along with thorough references in each chapter.