Fundamental Aspects of Dislocation Interactions

Fundamental Aspects of Dislocation Interactions

Low-Energy Dislocation Structures III

1st Edition - January 1, 1993

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  • Editors: G. Kostorz, H. A. Calderon, J. L. Martin
  • eBook ISBN: 9781483274928

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Fundamental Aspects of Dislocation Interactions: Low-Energy Dislocation Structures III covers the papers presented at a European Research Conference on Plasticity of Materials-Fundamental Aspects of Dislocation Interactions: Low-Energy Dislocation Structures III, held on August 30-September 4, 1992 in Ascona, Switzerland. The book focuses on the processes, technologies, reactions, transformations, and approaches involved in dislocation interactions. The selection first offers information on work softening and Hall-Petch hardening in extruded mechanically alloyed alloys and dynamic origin of dislocation structures in deformed solids. Discussions focus on stress-strain behavior in relation to composition, structure, and annealing; comparison of stress-strain curves with work softening theory; sweeping and trapping mechanism; and model of dipolar wall structure formation. The text then ponders on plastic instabilities and their relation to fracture and dislocation and kink dynamics in f.c.c. metals studied by mechanical spectroscopy. The book takes a look at misfit dislocation generation mechanisms in heterostructures and evolution of dislocation structure on the interfaces associated with diffusionless phase transitions. Discussions focus on dislocation representation of a wall of elastic domains; equation of equilibrium of an elastic domain; transformation of dislocations; and theoretical and experimental background. The selection is a valuable reference for readers interested in dislocation interactions.

Table of Contents

  • Preface

    Organizing Committee

    Work Softening and Hall-Petch Hardening in Extruded Mechanically Alloyed Alloys

    On the Dynamic Origin of Dislocation Structures in Deformed Solids

    Modeling the Spatiotemporal Aspects of the Portevin-Le Châtelier Effect

    Plastic Instabilities and Their Relation to Fracture

    Dislocation and Kink Dynamics in F.C.C. Metals Studied By Mechanical Spectroscopy

    Screened Disclinations in Solids

    Mechanisms of Yield Stress Anomalies in Beryllium and Ni3Al

    Collective Behavior and Superdislocation Motion in L12 Alloys

    Structure and Characterization of the Dislocations in Tilt Grain Boundaries between Σ = 1 and Σ = 3: a High Resolution Electron Microscopy Study

    Misfit Dislocation Generation Mechanisms in Heterostructures

    Evolution of Dislocation Structure on the Interfaces Associated with Diffusionless Phase Transitions

    Dislocation Loops at Crack Tips: Nucleation and Growth—an Experimental Study in Silicon

    Dislocation Dynamics and Brittle-to-Ductile Transitions

    Internal Stresses and Scaling Laws

    Deformation, Structure and Properties of Ceramics and Crystals of High-Tc Superconductors

    Structure and Mobility of the Polygonized Dislocation Walls in High Purity Aluminum

    Deformation Mechanisms of a Ferritic-Martensitic Steel between 290 and 870 K

    On the Effect of Nitrogen on the Dislocation Structure of Austenitic Stainless Steel

    Dislocation Cell Structures in Copper in Torsion and Tension

    Dislocation Distributions as Seen by X-Ray Line Profiles

    The Influence of Dislocations on Electrical Resistivity Anomalies in Palladium Alloys

    Dislocation Structure in L12 Long-Range-Ordered Ni3(Al,Ti) Deformed in the Temperature Regime between - 196°C and 800°C

    Dynamic Recovery of the Microstructure of Screw Dislocations in High Purity B.C.C. Metals

    Heterogeneous Dislocation Loop Nucleation and Free Surface Effects On Plastic Deformation: an In Situ Transmission Electron Microscopy Study

    Effect of Precipitation on the Development of Dislocation Substructure in Low Carbon Steels during Cold Deformation

    Transformation of Dislocation Patterns in Fatigued Copper Single Crystals

    Dislocation Activity and Differences between Tensile and Compressive Creep of Yttria Doped Alumina

    High Temperature Deformation Behavior of an Al-Fe-V-Si Alloy

    Dislocation-Associated Elastic Energy Storage in Mechanical Deformations

    Dislocation Structure and Corduroy Contrast in a 316L Alloy Fatigued at (0.3-0.5) Tm

    On Sequences of Stable and Unstable Regions of Flow along Stress-Strain Curves of Solid Solutions—Experiments on Cu-Mn Polycrystals

    Plastic Deformation of Single Glide Oriented Cu-2 to 15at.%Al Crystals at Elevated Temperatures

    Onset Mechanisms of Discontinuous Flow at Low Temperatures in One- and Two-Phase Cu-Be Alloys

    Hardening and Softening in Zr-Sn Crystals

    Low-Temperature Abrupt Deformation Processes in Metals: Kinetic and Statistical Properties Observed by Means of Electronic Response

    Rheological Behavior of Mild Steel under Monotonic Loading Conditions and Cross-Loading

    The Portevin-Le Châtelier Effect in Al-2.92%Mg-0.38%Mn Alloy and Linear Location of Acoustic Emission

    Stress Corrosion Microcleavage in a Ductile F.C.C. Alloy

    Dislocation-Controlled Stable Crack Growth in Mo and MgO

    Low-Energy Dislocations and Ductility of Ferritic Steels

    The Peak of Flow Stress in the L12 Structure and the Elimination of Kear-Wilsdorf Locks

    Calculation of Cross-Slip Parameters in F.C.C. Crystals

    Modeling High Temperature Creep of Academic and Industrial Materials Using the Composite Model

    Dynamical Model of the Wall Structure in Persistent Slip Bands of Fatigued Metals I. Dynamical Model of Edge Dislocation Walls

    Investigation of the Formation of Dislocation Cell Structures and the Strain Hardening of Metals by Computer Simulation

    Role of the Secondary Slip System in a Computer Simulation Model of the Plastic Behavior of Single Crystals

    Low-Temperature Dislocation Internal Friction in Crystals

    Ultrasonic Study of the Interaction Potential between a Dislocation and a Single Solute Atom

    Effects of Magnetic Fields on the Dislocation Unlocking from Paramagnetic Centers in Non-Magnetic Crystals

    A Dislocation Model for Internal Damping Due to the Thermal Expansion Mismatch between Matrix and Particles in Microheterogeneous Materials

    Interaction between Dislocations and Precipitates in an Al-Li Alloy

    Comparison between Simulation Calculations and Measurements concerning Athermal Yielding of Precipitation Hardening of Cu-Co Single Crystals

    Dislocation-Point Defects Interaction in Semiconductors and Kink Mobility

    Softening of α-Iron by Solute Nitrogen Atoms Investigated between 30 and 300 K by Use of Stress-Relaxation Measurements

    Mechanisms of Dislocation Motion and Multiplication in Ionic and Semiconductor Crystals

    Dislocation Substructures in Plastically Deformed AlN

    The Influence of Peierls Relief on Low-Temperature Plasticity of CdTe Single Crystals

    A New Internal Friction Peak and the Problem on the Peierls Potential in F.C.C. Metals

    A Method for Simulating Electron Microscope Dislocation Images

    On the Relationship between Unusual Mechanical Properties and Deformation Substructures in Ordered Ni3Al

    A Weak Beam Study of the Dislocation Structure in Directionally Solidified Ni3Al during Deformation

    Dislocation Core Structures in the Ordered Intermetallic Alloy TiAl

    Observations of Dislocations Relevant to the Anomalous Yield Stress in L12 Alloys

    Transmission Electron Microscope In Situ Deformation of MC2 Superalloy at Room Temperature

    Substructure of Dislocations in the (111) Plane in Ni3Ga Single Crystals

    The Stress Fields of Edge Dislocations near Wedge-Shaped Boundaries and Bonded Wedges

    Interactions between Lattice Dislocations and Grain Boundaries in L12 Ordered Compounds Investigated by In Situ Transmission Electron Microscopy and Computer Modeling Experiments

    Arrangement of Misfit Dislocations at Ti3Al/TiAl Phase Boundaries

    Image Forces on Dislocations: the Elastic Modulus Effect

    Misfit Dislocations and Other Defects in Thin Films

    Twin Propagation in TiAl

    Changes of Stacking Fault Sequences during the Martensitic Phase Transformation in Cu-Zn-Al Shape Memory Alloys

    Twins and Properties of Classical and High-Tc Superconductors

    Author Index

    Subject Index

Product details

  • No. of pages: 470
  • Language: English
  • Copyright: © Elsevier 1993
  • Published: January 1, 1993
  • Imprint: Elsevier
  • eBook ISBN: 9781483274928

About the Editors

G. Kostorz

Affiliations and Expertise

ETH Zürich, Zürich, Switzerland

H. A. Calderon

J. L. Martin

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