Rheology, Physical and Mechanical Behavior of Materials 1

Maurice Leroy is a lecturer and professor at the University of Nantes, France, as well as director of the Composite and Metallic Formations research laboratory at the IUT. He was instrumental in the creation of France’s first Materials Science and Engineering department.

• Preface xiChapter 1 Dynamic Plasticity: Dislocations 11.1 Introduction: how to describe plasticity? 11.2 Strain speed: ε (γ for shearing) 71.3 The microstructural mechanisms of plasticity 16Chapter 2 Obstacles and Mechanisms of Crossings 592.1 Obstacles 602.2 Nature and resistance of obstacles 612.3 Example of measuring dislocation speeds 622.4 Microstructural mechanisms of the deformation rate 672.5 Mechanisms due to obstacles: hardening mechanisms 682.6 Athermal mechanism of the movement of a dislocation 1162.7 Thermally activated mechanism of the movement of a dislocation 1222.8 The viscous friction mechanism 129Chapter 3 Dynamic Flows for Monocrystals and Polycrystals 1373.1 Type of monocristal and polycrystal dynamic shear test samples (anisotropy and isotropy at high speeds) 1383.2 The tensor of the shock stresses 1393.3 Study of strain on a polycrystal 1403.4 Dynamic flows by electromagnetic shocks, polycrystalline aluminum A5 1403.5 The case of six polycrystals 1423.6 The case of monocrystals 1433.7 Models for CFCs 1473.8 Dynamics of flows shown using an ultra-fast camera 1523.9 Viscoplasticity 1613.10 References for viscoplasticity 170Chapter 4 Limits to Static and Dynamic Formability 1734.1 Plastic instability 1734.2 Forming by pressing 1814.3 Damage: area between necking and fracture, the case between Forming Limit Curves (FLCs) and Fracture Forming Limit Curves (FFLCs) 1904.4 Limit of the formability during necking (FLCs) and during fracture (FFLCs): influence of the strain rate 196Chapter 5 Dynamic Resistance to Mechanical Shocks 2195.1 Shock stresses 2195.2 Resilience test 2275.3 Typical loads, stress waves 2515.4 Dynamic tests, Hopkinson technique, laws of behavior 264Appendix A Primary Times of Mechanisms 289References 313Index 319