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By Michael Kassner, Department of Aerospace and Mechanical Engineering, University of Southern California, Los Angeles, USA
Description Creep refers to the slow, permanent deformation of materials under external loads, or stresses. It explains the creep strength or resistance
to this extension. This book is for experts in the field of strength of metals, alloys and ceramics. It explains creep behavior at the
atomic or ?dislocation defect? level. This book has many illustrations and many references. The figure formats are uniform and consistently
labeled for increased readability. This book is the second edition that updates and improves the earlier edition.
Audience
Researchers and practitioners including metallurgists, ceramists, industrial designers, aerospace R&D personnel, and structural engineers from a wide range of fields and industry sectors.
Contents 1.0 Introduction
A. Description of Creep
B. Objectives
2.0 Five-Power-Law Creep
A. Macroscopic Relationships
1. Activation Energy and
Stress Exponents
2. Influence of the Elastic Modulus
3. Stacking Fault Energy and Summary
4. Natural-Three-Power Law
5. Substitutional
Solid Solutions
B. Microstructural Observations
1. Subgrain Size, Frank Network Dislocation Density, Subgrain Misorientation Angle,
and the Dislocation Separation Within the Subgrain Walls in Steady-State Structures
2. Constant-Structure Equations
3. Primary Creep
Microstructures
4. Creep Transient Experiments
5. Internal stress
C. Rate-Controlling Mechanisms
1. Introduction
2. Dislocation Microstructure
and the Rate Controlling Mechanism
3. In-Situ and Microstructure-Manipulation Experiments
4. Additional Comments on Network Strengthening
D. Other Effects on Five-Power-Law Creep
1. Large Strain Creep Deformation and Texture Effects
2. Effect of Grain Size
3. Impurity and
Small Quantities of Strengthening Solutes
4. Sigmoidal Creep
3.0 Diffusional Creep
4.0 Harper Dorn Creep
A. The Size Effect
B. The
Effect of Impurities
5.0 Three-Power-Law Viscous Glide Creep, by M.-T. Perez-Prado and M.E. Kassner
6.0. Superplasticity, by M.-T. Perez-Prado
and M.E. Kassner
A. Introduction
B. Characteristics of Fine Structure Superplasticity
C. Microstructure of Fine Structure Superplastic
Materials
1. Grain Size and Shape
2. Presence of a Second Phase
3. Nature and Properties of Grain Boundaries
D. Texture Studies
in Superplasticity
E. High Strain Rate Superplasticity (HSRS)
1. High Strain Rate Superplasticity in Metal-Matrix Composites
2.
High Strain Rate Superplasticity in Mechanically Alloyed Materials
F. Superplasticity in Nano and Submicrocrystalline Materials
7.0
Recrystallization
A. Introduction
B. Discontinuous Dynamic Recrystallization (DRX)
C. Geometric Dynamic Recrystallization
D. Particle
Stimulated Nucleation (PSN)
E. Continuous Reactions
8.0 Creep Behavior of Particle Strengthened Alloys
A. Introduction and Theory
B.
Small Volume Fraction Particles that are Coherent and Incoherent with Small Aspect Ratios
1. Introduction and Theory
2. Local and General
Climb
3. Detachment Model
4. Constitutive Relationships
5. Microstructural Effects
6. Coherent Particles
9.0 Creep of Intermetallics,
by M.-T. Perez-Prado and M.E. Kassner
A. Introduction
B. Titanium Aluminides
1. Introduction
2. Rate Controlling Creep Mechanisms
in FL TiAl Intermetallics During
?Secondary? Creep
3. Primary Creep in FL Microstructures
4. Tertiary Creep in FL Microstructures
C. Iron Aluminides
1. Introduction
2. Anomalous Yield Point Phenomenon
3. Creep Mechanisms
4. Strengthening Mechanisms
D. Nickel
Aluminides
1. Ni3Al
2. NiAl
10.0 Creep Fracture
A. Background
B. Cavity Nucleation
1. Vacancy Accumulation
2. Grain Boundary
Sliding
3. Dislocation Pile-Ups
4. Location
C. Growth
1. Grain Boundary Diffusion Controlled Growth
2. Surface Diffusion Controlled
Growth
3. Grain Boundary Sliding
4. Constrained Diffusional Cavity Growth
5. Plasticity
6. Coupled Diffusion and Plastic Growth
7. Creep Crack Growth
8. Other Considerations
8. Other Considerations
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