Superplasticity and Grain Boundaries in Ultrafine-Grained Materials

Superplasticity is a state in which solid crystalline materials, such as some fine-grained metals, are deformed well beyond their usual breaking point. The phenomenon is of importance in processes such as superplastic forming which allows the manufacture of complex, high-quality components in such areas as aerospace and biomedical engineering.Superplasticity and grain boundaries in ultrafine-grained materials discusses a number of problems associated with grain boundaries in metallic polycrystalline materials. The role of grain boundaries in processes such as grain boundary diffusion, relaxation and grain growth is investigated. The authors explore the formation and evolution of the microstructure, texture and ensembles of grain boundaries in materials produced by severe plastic deformation.Written by two leading experts in the field, Superplasticity and grain boundaries in ultrafine-grained materials significantly advances our understanding of this important phenomenon and will be an important reference work for metallurgists and those involved in superplastic forming processes. Discusses significant problems associated with grain boundaries in polycrystals incorporating structural superplasticity and grain boundary slidingAssesses the role of grain boundaries in processes such as grain boundary diffusion, relaxation and grain growthExplores the formation and evolution of the microstructure, texture and ensembles of grain boundaries in materials produced by severe plastic deformation INDICE: Structural superplasticity of polycrystalline materials; Characteristics of grain boundary enesembles; Orientation-distributed parameters of the polycrystalline structure; Experimental investigation of the ensembles of grain boundaries in polycrystals; Grain boundary sliding in metallic bi- and tri-crystals; Percolation mechanism of deformation processes in ultrafine-grained polycrystals; Percolation processes in a network of grain boundaries in ultrafine-grained materials; Microstructure and grain boundary ensembles in ultrafine-grained materials; Grain boundary processes in ultrafine-grained nickel and nanonickel; Duration of the stage of stable flow in superplastic deformation; Derivation of constitutive equations in multicomponent loading conditions.

• ISBN: 978-0-08-101731-9
• Editorial: Woodhead Publishing
• Encuadernacion: Rústica
• Páginas: 328
• Fecha Publicación: 30/06/2016
• Nº Volúmenes: 1
• Idioma: Inglés