Cover Image

Rheology, Physical and Mechanical Behavior of Materials. 1, Physical Mechanisms of Deformation and Dynamic Behavior /

Bibliographic Details
Main Author: Leroy, Maurice
Format: eBook
Language:English
Published: London ; Hoboken, NJ : John Wiley & Sons, 2023.
Edition:1st ed.
Series:Mechanical engineering and solid mechanics series
Subjects:
Materials > Mechanical properties.
Materials > Elastic properties.
Rheology.
Online Access:Connect to the full text of this electronic book
Table of Contents:
  • Cover
  • Title Page
  • Copyright Page
  • Contents
  • Preface
  • Chapter 1. Dynamic Plasticity: Dislocations
  • 1.1. Introduction: how to describe plasticity?
  • 1.1.1. Equivalence between forming processes and mechanical tests
  • 1.1.2. Early stages of strain
  • 1.1.3. Multiplication of dislocations
  • 1.1.4. Fine-level observations (load.unload cycles) of the beginning of plasticization
  • 1.2. Strain speed: ( for shearing)
  • 1.2.1. A few definitions and orders of magnitude
  • 1.2.2. Influence of the strain speed
  • 1.2.3. The influence of the #x81;ghistory#x81;h of strain
  • 1.2.4. Dynamic.dynamic speed jump
  • 1.3. The microstructural mechanisms of plasticity
  • 1.3.1. Description of a dislocation and its line
  • 1.3.2. Dislocation types
  • 1.3.3. Crystallographic slips
  • 1.3.4. Twinning
  • 1.3.5. Force on the dislocation
  • Chapter 2. Obstacles and Mechanisms of Crossings
  • 2.1. Obstacles
  • 2.2. Nature and resistance of obstacles
  • 2.3. Example of measuring dislocation speeds
  • 2.4. Microstructural mechanisms of the deformation rate
  • 2.5. Mechanisms due to obstacles: hardening mechanisms
  • 2.5.1. Obstacles to movement due to the dislocations themselves
  • 2.5.2. Interactions with the forest
  • 2.5.3. (Simplified) analysis of the consolidation due to the forest dislocation
  • 2.5.4. Blockages of dislocations by pileups
  • 2.5.5. Piling-up of dislocations
  • 2.5.6. Influence of grain size
  • 2.5.7. The case of nanomaterials (very small grain size): mechanical strength and hardness (T less than 0.3 Tf)
  • 2.5.8. Influence of vacancies
  • 2.5.9. Vacancies and dislocations
  • 2.5.10. Stacking and twinning faults
  • 2.5.11. Lomer.Cottrell barriers
  • 2.5.12. Influence of obstacles associated with alloy elements and impurities
  • 2.5.13. Anchoring dislocations
  • 2.5.14. Formation of loops around particles.
  • 2.5.15. Substitution and insertion of atoms
  • 2.5.16. Evolution of the stress due to the added elements
  • 2.5.17. Hardening by precipitates
  • 2.6. Athermal mechanism of the movement of a dislocation
  • 2.6.1. Density of dislocations and athermal stress
  • 2.7. Thermally activated mechanism of the movement of a dislocation
  • 2.7.1. Model of the behavior law
  • 2.8. The viscous friction mechanism
  • 2.8.1. Influence of viscosity of the medium on the viscous damping coefficient B
  • Chapter 3. Dynamic Flows for Monocrystals and Polycrystals
  • 3.1. Type of monocristal and polycrystal dynamic shear test samples (anisotropy and isotropy at high speeds)
  • 3.2. The tensor of the shock stresses
  • 3.3. Study of strain on a polycrystal
  • 3.4. Dynamic flows by electromagnetic shocks, polycrystalline aluminum A5
  • 3.5. The case of six polycrystals
  • 3.6. The case of monocrystals
  • 3.6.1. Flow of a crystal
  • 3.7. Models for CFCs
  • 3.7.1. Viscoplastic dynamic flows of crystals: the case of aluminum ( C 104 s-1)
  • 3.8. Dynamics of flows shown using an ultra-fast camera
  • 3.8.1. Dynamics of shear shocks
  • 3.9. Viscoplasticity
  • 3.9.1. Influence of phonic and electronic viscous friction: the case of lead
  • 3.9.2. Viscoplasticity of metal crystals: influence of viscous friction
  • 3.10. References for viscoplasticity
  • Chapter 4. Limits to Static and Dynamic Formability
  • 4.1. Plastic instability
  • 4.1.1. Necking
  • 4.1.2. Work hardening coefficient n
  • 4.1.3. Instabilities studies (including speed effect ...)
  • 4.1.4. Role of the strain speed
  • 4.1.5. Summary
  • 4.1.6. Generalized strain speed
  • 4.2. Forming by pressing
  • 4.2.1. Study of plastic instability
  • influence of work hardening and anisotropy (characteristics of pressing thin sheets).
  • 5.3.1. Longitudinal compression waves, mechanical impedance, stress
  • 5.3.2. Wave step diagram
  • 5.4. Dynamic tests, Hopkinson technique, laws of behavior
  • 5.4.1. Principle of dynamic tests with Hopkinson bars
  • 5.4.2. Measurement of strain by extensometry gauges
  • 5.4.3. Data acquisition
  • 5.4.4. Data processing: analysis of dynamic behavior tests of materials
  • 5.4.5. Dynamic tension and torsion
  • 5.4.6. Dynamic shear of monocrystals and polycrystals
  • Appendix A. Primary Times of Mechanisms
  • References
  • Index
  • EULA.