Superalloys

Superalloys: Strengthening Behavior of Precipitating Phases covers the strengthening mechanisms associated with all types of precipitates that form in superalloys, synthesizing a vast body of literature on the strengthening behavior of these phases, with each chapter introducing fundamental metallurgical principles to help readers develop a clear understanding. It provides an in-depth exploration of the deformation mechanisms of intermetallic phases in superalloys, focusing on the interaction between matrix dislocations and these phases. The book is structured into seven chapters, each focusing on different aspects of superalloys, the strengthening precipitates, and their mechanisms. Chapter 1 provides an overview of superalloys, their classifications, compositions, and the various strengthening phases, also covering the reasons behind the varying strengthening behavior of different precipitates. Chapter 2 lays the foundation for understanding deformation and strengthening mechanisms in metals and alloys, while chapters 3, 4, and 5 each focus on the strengthening behavior and mechanisms of specific precipitates, γ′, γ″, and Ni2(Cr,Mo), respectively. Chapter 6 discusses the strengthening effects of the δ and η phases, which form at intermediate temperatures and play a crucial role in controlling grain size, enhancing creep and fatigue resistance. Chapter 7 examines the role of other strengthening agents, including oxides, borides, and carbides, which improve the high-temperature strength by impeding dislocation motion and grain boundary sliding.