Tabla de Contenidos:
  • Chapter 8: Collective behavior and superdislocation motion in L12 alloysAbstract; 1 Introduction; 2 The model; 3 Results; 4 Non-equilibrium phase transition and primary creep; 5 Simplified superdislocation model; 6 Discussion and conclusions; Acknowledgment; Chapter 9: Structure and characterization of the dislocations in tilt grain boundaries between [epsilon] = 1 and [epsilon] = 3: a high resolution electron microscopy study; Abstract; 1 Introduction; 2 Structure of favoured and intermediate GBs; 3 Characterization of the SU/GBD; 4 SU Burgers vector evolution; 5 Conclusion.
  • Cover image; Title page; Table of Contents; Copyright; Preface; Organizing Committee; Chapter 1: Work softening and Hall-Petch hardening in extruded mechanically alloyed alloys; Abstract; 1 Introduction; 2 Stress-strain behavior in relation to composition, structure and annealing; 3 Microstructures in A3 after deformation; 4 Comparison of stress-strain curves with work softening theory; 5 Interpretation of the micrographic observations; 6 Discussion and conclusions; Acknowledgments; Chapter 2: On the dynamic origin of dislocation structures in deformed solids; Abstract; 1 Introduction.
  • 2 Sweeping and trapping mechanism3 Model of dipolar wall structure formation; 4 Coupling to the stress field; 5 Summary; Chapter 3: Modelling the spatiotemporal aspects of the Portevin-Le Ch�atelier effect; Abstract; 1 Introduction; 2 Propagation mechanisms; 3 Formulation; 4 Conclusions; Chapter 4: Plastic instabilities and their relation to fracture; Abstract; 1 Introduction; 2 Heterogeneous deformation in monotonic loading: influence on toughness; 3 Heterogeneous deformation in fatigue and the Coffin-Manson law; 4 A second example of damage percolation: ductility of a brittle polycrystal.
  • ConclusionAcknowledgments; Chapter 5: Dislocation and kink dynamics in f.c.c. metals studied by mechanical spectroscopy; Abstract; 1 Introduction; 2 Anelasticity and dislocation damping; 3 Experimental techniques; 4 Kink dynamics; 5 Discussion; 6 Conclusions; Chapter 6: Screened disclinations in solids; Abstract; 1 Introduction; 2 Some simple geometrical properties of disclinations; 3 Disclinations and structure levels of plastic flow; 4 Different approaches to the calculation of energetic properties of disclinations; 5 Screened straight disclinations in an infinite continuum.
  • 6 Disclination loops in an infinite continuum7 External screening for disclination defects; 8 Screened disclinations in rotational structures in crystalline solids; 9 Disclination mechanisms of plastic deformation and hardening; 10 Disclinations in non-crystalline materials; 11 Conclusions; Acknowledgments; Chapter 7: Mechanisms of yield stress anomalies in beryllium and Ni3 Al; Abstract; 1 Introduction; 2 Peierls mechanism and the locking-unlocking mechanism; 3 The yield stress anomaly in beryllium; 4 The yield stress anomaly in Ni3Al-type ordered alloys; 5 Conclusions.