Description

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.

Key Features

  • Discusses significant problems associated with grain boundaries in polycrystals incorporating structural superplasticity and grain boundary sliding
  • Assesses the role of grain boundaries in processes such as grain boundary diffusion, relaxation and grain growth
  • Explores the formation and evolution of the microstructure, texture and ensembles of grain boundaries in materials produced by severe plastic deformation

Readership

Metallurgists and researchers concerned with the problems of nanomaterials and nanotechnology.

Table of Contents

Introduction

Chapter 1: Structural Superplasticity of Polycrystalline Materials

1.1 Structural levels, spatial scales and description levels

1.2 Structural superplasticity: from the combination of mechanisms to cooperative grain boundaries sliding

1.3 Structural superplasticity: from meso-description to macrocharacteristics

Chapter 2: Characteristics of Grain Boundary Ensembles

2.1 Crystal geometry and structure of intercrystalline boundaries

2.2 Special grain boundaries in the monoclinic lattice

2.3 Description of the grain boundary misorientation distribution (GBMD)

2.4 Computer model of a polycrystal: a calculation algorithm

Chapter 3: Orientation-Distributed Parameters of the Polycrystalline Structure

3.1 The distribution function of the grains with respect to crystallographic orientations: calculation methods

3.2 Relationship between the grain boundary misorientation distribution and the ODF

3.3 Correlation orientation of adjacent grains: the concept of the basis spectra of misorientation of the grain boundaries

3.4 Modelling the misorientation spectra of the grain boundaries in the FCC crystals with modelling ODF

Chapter 4: Experimental Investigations of Grain Boundary Ensembles in Polycrystals

4.1 Diffraction methods of measuring misorientation

4.2 Experimental spectra of the grain boundaries in FCC polycrystals

4.3 Orientation distribution function in Ni–Cr alloy: experimental and modelling GBMDs

4.4 Special features of the grain boundaries in the FCC materials with a high stacking fault energy

Chapter 5: Grain Boundary Sliding in Metallic bi- and Tricrystals

5.1 Dislocation nature of grain boundary sliding (GBS)

5.2 Formulation of the model of stimulated grain boundary sliding

5.3 Formal solution and its analysis

5.4 Special features of pure grain boundary

Details

No. of pages:
328
Language:
English
Copyright:
© 2011
Published:
Imprint:
Woodhead Publishing
Print ISBN:
9780857091000
Electronic ISBN:
9780857093837

About the editors

A L Zhilyaev

Dr Alexander L. Zhilyaev works at the Centro Nacional de Investigaciones Metalurgicas (CENIM), CSIC, Spain.

A I Pshenichnyuk

Dr A. I. Pshenichnyuk works at the Institute for Superplasticity of Metals, Russia. Both are noted for their research on superplasticity.